In the late 1800s, people in many parts of the world decided to leave their homes and immigrate to the United States. Fleeing crop failure, land and job shortages, rising taxes, and famine, many came to the U. S. because it was perceived as the land of economic opportunity. Others came seeking personal freedom or relief from political and religious persecution. With hope for a brighter future, nearly 12 million immigrants arrived in the United States between 1870 and 1900. During the 1870s and 1880s, the vast majority of these people were from Germany, Ireland, and England--the principal sources of immigration before the Civil War. That would change drastically in the next three decades.
Periodization often helps historians study the past in that it compartmentalized the past into more easily "manageable" segments, which can help the historian better understand cause and effect relationships.
The Bill Of Rights, because the federalists did not think that they needed a Bill Of Riggs, but the Anti-Federalists insisted that they wanted to protect themselves and, they’re rights from a strong leading government, basically they had experienced monarchy from the British so they were afraid of losing the free country.
Opposition to civil rights was led by elected officials, journalists, and community leaders who shared racist ideologies, shut down public schools and parks to prevent integration, and encouraged violence against civil rights activists. The U.S. Congress soon followed the Civil Rights Act of 1964 with the passage of the Voting Rights Act of 1965. The fight for civil and human rights focused on issues of freedom of expression, freedom of conscience, freedom to emigrate, punitive psychiatry, and the plight of political prisoners. Cold War, the open yet restricted rivalry that developed after World War II between the United States and the Soviet Union.