Started: Jamestown founded.
Ended: French and Indian War
Started: England ended salutary neglect.
Ended: Treaty of Paris signed ending Revolution.
Started: States surrender their western land claims.
Ended: Constitution ratified.
Started: Cotton gin invented/rise of slavery.
Ended: Civil War started.
Started: War of 1812 ended.
Ended: Election of 1824.
Started: Andrew Jackson elected president.
Ended: Mexican War ended/James Polk leaves office.
Started: Civil War ended.
Ended: Compromise of 1877
"Era of Good Stealings"
Started: Ulysses Grant elected president.
Ended: Assassination of William McKinley.
Started: Square Deal began.
Ended: America entered the Great War (WWI).
Started: Franklin Roosevelt began his presidency.
Ended: World War II began in Europe