A free, self-paced textbook in 7 chapters. Read a chapter, then drill it with the 206 companion flashcards using spaced repetition.
The dawn of the modern era in Europe was marked by a wave of exploration, artistic flourishing, and religious upheaval. In 1492, Christopher Columbus, funded by the Spanish Crown o...
The late seventeenth and eighteenth centuries witnessed a chain of revolutions that redefined politics, economics, and society. In England, the Glorious Revolution of 1688 overthre...
The nineteenth century was a story of nation-building, industrial might, and imperial ambition. In the United States, the doctrine of Manifest Destiny drove westward expansion, but...
The early twentieth century shattered the long peace of the European concert. World War I began on June 28, 1914, with the assassination of Archduke Franz Ferdinand in Sarajevo. Th...
Almost as soon as the Second World War ended, a new rivalry took its place. The Cold War, lasting roughly from 1947 to 1991, pitted the United States and its allies against the Sov...
By the mid-1980s, the Soviet system was faltering. Mikhail Gorbachev, who came to lead the USSR, introduced two landmark reforms: perestroika, an economic restructuring, and glasno...
The new century opened with trauma. On September 11, 2001, the al-Qaeda terrorist attacks on the United States killed nearly three thousand people and prompted a U.S.-led invasion...