Currency: Did you mean...?

Spanish silver dollar from the reign of Charles III of Spain (r. 1759–1788). Minted in Mexico, under the authority of the Kingdom of Spain, 1771.

An eight-dollar bill minted by the Continental Congress in 1775. Collection of the Baker Library, Harvard Business School.

The silver "pine tree" shilling minted in the Massachusetts Bay Colony by John Hull in 1652.

A bill worth two shillings, or a "2s", from the Massachusetts Bay Colony. Collection of the National Numismatic Collection at the Smithsonian Institution.

The Inca civilization flourished in ancient Peru between c. 1400 and 1533 CE. The Inca Empire eventually extended across western South America from Quito in the north to Santiago in the south. It was the largest empire ever seen in the Americas...

The Columbian exchange is a term coined by Alfred Crosby Jr. in 1972 that is traditionally defined as the transfer of plants, animals, and diseases between the Old World of Europe and Africa and the New World of the Americas. The exchange...

The French Revolution (1789-1799) was a period of major societal and political upheaval in France. It witnessed the collapse of the monarchy, the establishment of the First French Republic, and culminated in the rise of Napoleon Bonaparte...

The Ghana Empire flourished in West Africa from at least the 6th to 13th century. Not connected geographically to the modern state of Ghana, the Ghana Empire was located in the western Sudan savannah region (modern southern Mauritania and...

The centre of Inca power was the capital Cuzco, considered the navel of the world. 40,000 Incas governed an empire of over 10 million subjects who spoke over 30 different languages. Consequently, the centralised government employed a vast...

The American Revolution (1765-1789) was a period of political upheaval in the Thirteen Colonies of British North America. Initially a protest over parliamentary taxes, it blossomed into a rebellion and led, ultimately, to the birth of the...