In 1642, King Charles I and the elected Parliament of England went to war over the future of the Stuart kingdom. Over the next nine years, three civil wars would be fought, devastating the populations of England, Scotland, and Ireland. With the authority of the monarchy, the freedom of Parliament, and the power of religion at stake, the English Civil Wars decided the future of Great Britain and influenced the future of politics around the world.

Beginning with the birth of the nation, slavery divided and caused conflict for the United States of America, worsening during the country's early decades as the practice became more economically vital. Finally, in 1861, the American Civil War erupted after the election of President Abraham Lincoln. Never acknowledging the South’s right to secede, Lincoln and the North fought the South through four long, bloody, destructive years; much longer than anyone thought the war would last. 

Until surprisingly recently, most history books noted that America was discovered in 1492 by Christopher Columbus. The truth was that by the time that Columbus arrived in America, people had been living there for more than 12,000 years. This is the story of the gradual rise, sudden destruction, and slow recovery of the native people of North America.

Over the course of just 200 years, the Ottoman Empire grew from a small, obscure Anatolian state into the most powerful Muslim nation in the world, controlling vast swathes of the Middle East, Eastern Europe, and North Africa. Within the empire, science, medicine, technology, and art flourished, and the Ottoman army became one of the most feared and efficient fighting forces in existence. Then came a period of gradual decline. 

Violent confrontation between armed groups over the supply of illegal narcotics is something we commonly associate with criminal gangs in modern cities, but in the mid-19th century Great Britain went to war with Imperial China in order to continue to supply Chinese addicts with opium. The two wars that followed have become known as the Opium Wars, and they led to the utter defeat of China, the establishment of a British colony in Hong Kong, and the continuation of a narcotics trade that was worth millions of pounds each year to the British.