As more generations are being born in the US, ties with England become frayed. Representatives of the 13 colonies formed the Continental Congress and wrote the Declaration of Independence in which they declared that they wanted to be their own country, the United States of America. War with England began.
First large wave of immigrants arrive
Over the next several years large amounts of immigrants arrived from England, Germany, Scotland and Ireland.
Trail of Tears
Forced relocation of Cherokee , Creek, Seminole, and Chocktaw from their homeland to Indian Territory in Oklahoma. During this time as the US was expanding westward, pushing Native Americans further off their land.
A discovery of gold at a sawmill spured a mass migration of settlers and foreigners to California with the hopes to strike it rich. Included in the migration where people from China, France, Germany, Chile, Mexico, Ireland, and Turkey.
Civil War begins between the Northern and Southern states
During the Civil War over 600,000 lives were lost. Many of those were immigrants that fought for both sides. This war led to the eventual end of legalized slavery.
Enacted as a federal law that put limitations on who and how many immigrants were allowed to enter the Unted States. One of the reasons for the law was that Americans became suspiscious of people who were not "native" born and questioned their motives. LAws like this increased fear and prejuidices of foreigners.