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April 7 is World Health Organization Day, in honor of the day that the World Health Organization held the first World Health Assembly in 1948. International health conferences had been held nearly a century before this date, and international health organizations had been established in the half century prior to the creation of the World Health Organization, but 1948 marked the year that a formal institution was created to direct and implement a concerted and truly global effort to investigate, prevent, control, and cure disease.

World War II stood apart in many ways from every earlier war. The responsibility for mounting an attack on American industry was given to the German military secret intelligence service, the Abwehr, which devised a plan to land saboteurs in America to attack factories, railroads, and perhaps conduct a random bombing campaign against American civilians. The Nazi plan was given the codename of Operation Pastorius, and it was launched in June 1942, just six months after Germany had declared war on America. What followed was one of World War II’s most bizarre spy stories.

The Christian influences of the Portuguese in Africa helped lead to conversion movements in the Kingdom of Kongo, most famously that of Kimpa Vita, a young woman whose story included striking parallels with Joan of Arc. As the leader of a Christian movement, Kimpa Vita became involved in internal political disputes within the Kingdom of Kongo, even as she set about spreading Christianity, and her ultimate fate has kept her memory alive as an ideal for later democratic and religious movements across the African continent.

After the Western Roman Empire ended in 476, a host of new, primarily Germanic people inherited Roman lands, wealth, and ideas in Western Europe. The most notable of these were the non-Germanic Huns, but after them came the Gepids, an important but overlooked group. The Gepids were no less bellicose than the other Germanic tribes or the Huns, causing immense destruction throughout Europe and constantly threatening the stability of the Eastern Roman Empire. The Gepids knew how to use the powerful Byzantine Empire to their advantage and to make alliances with other Germanic tribes.

Imagine a feline with the spirit of a lion, the sneakiness of a puma, the terrifying walk of a black bear, and the strong arms of a gorilla. This amazing creature was best known as the saber-toothed tiger, an animal so fearless, it could beat beasts even twice their size! After dinosaurs, few vanished animals are as famous as the woolly mammoths, or in 18th-century scientist George Cuvier’s words, "some kind of extinct elephant".

James Meredith’s struggle to integrate the University of Mississippi in 1962 is still remembered vividly, but the Little Rock Nine are frequently overlooked when it comes to discussing the Civil Rights Movement, despite attempting to integrate Little Rock Central High School five years earlier. For millions of kids, high school is a tumultuous time, but for the Little Rock Nine, the first African American students to attend a previously segregated high school in Little Rock, Arkansas, those years were nightmarish.

"Our grandfathers had to run, run, run. My generation's out of breath. We ain't running no more.” (Stokely Carmichael). In the town of Greenwood, central Mississippi, on the evening of June 16, 1966, one of the most influential speeches in modern American history was delivered on the grounds of Stone Street Negro Elementary School. Earlier in the day, as a body of marchers tried to set up camp on the grounds of the school, they were approached by local officials and law enforcement with instructions to move on.

If trench warfare was an inevitability during the war, it is only because the events leading up to the First Battle of the Marne were quite different. The armies at the beginning of the war moved quickly through the land, but the First Battle of the Marne devolved into a bloody pitched battle that led to the construction of trenches after the Germans retreated, blocked in their pursuit of Paris.

The early history of our planet covers such vast stretches of time that years, centuries, and even millennia become virtually meaningless. Instead paleontologists and scientists who study geochronology divide time into periods and eras. The current view of science is that planet Earth is around 4.6 billion years old. The first four billion years of its development are known as the Precambrian period. For the first billion years or so, there was no life in Earth. Then the first single-celled life-forms, early bacteria and algae, began to emerge.

As soon as man discovered writing, he began engaging in historiography (historical writing and philosophy), but paleoanthropology only really began in the late 1800s. As archaeologists began finding bones in European caves of a human race that was very different than any race in the modern world, the study of paleoanthropology was born. The race of those early humans who were found in the European caves were later termed Neanderthals, and for quite some time, they were believed to have been the race from which many modern humans were directly descended.

Today, the Space Race is widely viewed poignantly and fondly as a race to the Moon that culminated with Apollo 11 “winning” the race for the United States. In fact, it encompassed a much broader range of competition between the Soviet Union and the United States that affected everything from military technology to successfully launching satellites that could land on Mars or orbit other planets in the Solar System.

Over the last 2,000 years, ambitious men have dreamed of forging vast empires and attaining eternal glory in battle, but of all the conquerors who took steps toward such dreams, none were ever as successful as antiquity’s first great conqueror. Leaders of the 20th century hoped to rival Napoleon’s accomplishments, while Napoleon aimed to emulate the accomplishments of Julius Caesar. But Caesar himself found inspiration in Alexander the Great (356 - 323 BCE), the Macedonian king who managed to stretch an empire from Greece to the Himalayas in Asia by the age of 30.

By the time Christopher Columbus started setting east from the New World, he had explored San Salvador in the Bahamas (which he thought was Japan), Cuba (which he thought was China), and Hispaniola, the source of gold. As the common story goes, Columbus, en route back to Spain from his first journey, called in at Lisbon as a courtesy to brief the Portuguese King John II of his discovery of the New World.

What would you get if you mixed Edgar Allan Poe, Alfred Hitchcock, and Stephen King? The answer might be something resembling Howard Phillips Lovecraft, an extremely influential poet and author who mixed science fiction, horror, and fantasy into a subgenre known as “weird fiction”. H.P. Lovecraft: The Life and Career of the Influential Horror Fiction Author chronicles how Lovecraft became one of the 20th century’s most important writers.

The modern world has the ancient Romans to thank for the origins of many modern technologies, conveniences, and ideas, from running water, baths, and republican-style government to roads. Similarly, by the third century BCE, the Romans were prodigious monument builders, so much so that the memory of the great Roman Republic and the Roman Empire continues to exist within a cityscape of stone. Rome’s public spaces were filled with statues, arches, temples, and many other varieties of monumental images, and each of these structures had its own civic or religious function.

Today, the Space Race is widely viewed poignantly and fondly as a race to the Moon that culminated with Apollo 11 “winning” the race for the United States. In fact, it encompassed a much broader range of competition between the Soviet Union and the United States that affected everything from military technology to successfully launching satellites that could land on Mars or orbit other planets in the Solar System.

It is rare to find a single battle that is truly decisive in shaping the course of subsequent history, but occasionally, a battle becomes pivotal in retrospect, defining and shaping what comes after it. The Battle of Zama, which pitted the army of the Roman Republic against the forces of Carthage on the plains of North Africa, was one such battle, and it featured two of history’s greatest generals on opposing sides.

Though history is usually written by the victors, the lack of a particularly strong writing tradition from the Mongols ensured that history was largely written by those who they vanquished. Because of this, their portrayal in the West has been extraordinarily negative for centuries, at least until recent revisions to the historical record. The Mongols have long been depicted as wild horse-archers galloping out of the dawn to rape, pillage, murder and enslave, but the Mongol army was a highly sophisticated, minutely organized and incredibly adaptive and innovative institution.

In the summer of 1962, Martin Luther King, Jr. and the Southern Christian Leadership Conference (SCLC) began to express interest in targeting one of the South's most brutally segregated cities. Nicknamed “Bombingham”, the city had witnessed the bombing of over a dozen Black homes and churches in the previous five years. A victory in Birmingham was a goal that would embolden the Civil Rights Movement like never before. Together with Ralph Abernathy and other SCLC leaders, King recruited and organized volunteers for sit-ins, demonstrations, boycotts, and protests throughout the city.

It has been famously pointed out that the Holy Roman Empire was neither holy, nor Roman, but it was also not an empire in the sense people expect when hearing the term. In theory, the emperor was the highest prince in Christendom, and his dominion extended the length and breadth of Western Europe. The empire had been created by the papacy in 801 when Pope Leo III famously crowned the supposedly unwitting Charlemagne in Saint Peter’s Basilica, intending to recreate the Western Roman Empire. In truth, the imperial power did not extend beyond central Europe.