Cotton gin

A machine that separates cotton from its seed

Interchangeable parts

Parts o a machine or device that can be replaced by another identical part

Application

Way in which something is used

Reaper

A machine that cut grain for harvesting

Stagecoach

Large carriage pulled by horses used to carry passengers

Steam engine

A machine that uses steam from boiling water to creat power

Previous

Coming before; earlier

Immigrant

Person who lives in a country in which he or her wasn't born in

Union

Group of states or nations that are ruled by one government or that agree to work together

Manifest destiny

The belief that the United States had a right to expand its border west to the Pacific Ocean and south to the Rio Grande

Trail of Tears

The name given to the forced march of 15,000 Cherokee in 1838 from their homes in Georgia to the Indian Territory

Wagon trail

a line of wagons led west by an experienced guide

Discrimination

unfair treatment of people based on their differences

Treaty of Guadalupe Hidalgo

the treaty under which Mexico sold territory to the United States

Gold rush

the sudden rush of people to an area where gold had been discovered