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Oct 12, 1492
Discovery of America
The Italian navigator Christopher Columbus leads the first successful transatlantic naval expedition, thus “discovering” the North American continent for the Europeans. -
Dec 31, 1492
Columbian Exchange
The Columbian Exchange was the widespread exchange of animals, plants, culture, human populations, communicable diseases, technology and ideas between the American and Afro-Eurasian hemispheres following the voyage to the Americas by Christopher Columbus in 1492. -
Period: Jan 1, 1500 to
Triangular Trade
The best-known triangular trading system is the transatlantic slave trade, that operated from the late 16th to early 19th centuries, carrying slaves, cash crops, and manufactured goods between West Africa, Caribbean or American colonies and the European colonial powers. -
Jamestown
After setting sail in late 1606, the Virginia Company's three ships landed near the mouth of Chesapeake Bay, The 100 colonists chose a location on the wooded and malarial banks of the James River. -
Plymouth
Founded by a group of Separatists initially known as the Brownist Emigration and Anglicans, who together later came to be known as the Pilgrims, Plymouth Colony was, along with Jamestown and other settlements in Virginia, one of the earliest successful colonies to be founded by the English in North America, and the first sizable permanent English settlement in the New England region. -
Period: to
Revolutionary War
The American Revolutionary War (1775–1783), the American War of Independence,[N 1] or simply the Revolutionary War in the United States, was the successful rebellion against Great Britain of thirteen North American colonies who confederated themselves as the United States of America. -
Founding of the United States of America
On July 4, 1776, the Congress adopted the Declaration of Independence drafted by Thomas Jefferson, proclaimed that all men are created equal, and founded a new nation, the United States of America. -
Louisiana Purchase
he Louisiana Purchase was the acquisition by the United States of America in 1803 of 828,000 square miles of France's claim to the territory of Louisiana. The Louisiana territory encompassed all or part of 15 present U.S. states and two Canadian provinces. -
North River Steamboat
he North River Steamboat or North River (often erroneously referred to as Clermont) is widely regarded as the world's first commercially successful steamboat.It was the first vessel to demonstrate the viability of using steam propulsion for commercial river transportation. -
SS Savannah
SS Savannah was an American hybrid sailing ship/sidewheel steamer built in 1818. It is notable for being the first steamship in the world to cross the Atlantic Ocean. -
Monroe Doctrine
The Monroe Doctrine was a US foreign policy regarding Latin American countries in the early 19th century. It stated that further efforts by European nations to colonize land or interfere with states in North or South America would be viewed as acts of aggression, requiring U.S. intervention. -
Samuel Morse Invents Electric Telegraph
Telegraph becomes first technology capable of
enabling global communication. -
Period: to
Mexican-American War
The Mexican–American War was an armed conflict between the United States and the Centralist Republic of Mexico from 1846 to 1848 in the wake of the 1845 U.S. annexation of Texas, which Mexico considered part of its territory despite the 1836 Texas Revolution. -
The Purchase of Alaska
Secretary of State William Sweard, an ardent expansionist, signed a treaty with Russia that transferred Alaska to the United States for the bargain price of $7.2 million. -
Annexation of Hawaii
A joint resolution of annexation was rusehd through Congress and approved by McKinley. These events were the culmination of nearly a century of Americanization by sailors, whalers, traders, and missionaries. -
Treaty of Paris
The Treaty of Paris was an agreement made in 1898 that resulted in the Spanish Empire's surrendering control of Cuba and ceding Puerto Rico, parts of the Spanish West Indies, the island of Guam, and the Philippines to the United States. -
Period: to
Aerial Transportation Develops Worldwide
The Wright Brothers test experimental airplane
in North Carolina marking the first successful
manned flight. Sixteen years later, British aviators Alcock and
Brown make the first, non-stop flight across the
Atlantic Ocean. -
Roosevelt Corollary
The Roosevelt Corollary is a corollary to the Monroe Doctrine that states that the United States will intervene in conflicts between European countries and Latin American countries to enforce legitimate claims of the European powers, rather than having the Europeans press their claims directly. -
Period: to
World War I
The First World War was a global war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918. -
U.S. Entry Into WWI
The United States' entry into World War I came in April 1917, after two and a half years of efforts by President Woodrow Wilson to keep the United States neutral. -
Period: to
World War II
The Second World War, was a global war. It involved the vast majority of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis. -
U.S. Entry Into WWII
America's isolation from war ended on December 7, 1941, when Japan staged a surprise attack on American military installations in the Pacific.
