<span>Launching of troops and bombs on enemy targets creating combat situations between two armies</span>
The first that come to mind are Jews, Christians, black people, homosexuals, political enemies to Adolf Hitler, and disabled people.
There was a lot of religious persecution that took place in Europe during the time when England established colonies. In addition, England required natural resources and markets to sell goods.
<span>The United States experienced major waves of immigration during the colonial era, the first part of the 19th century and from the 1880s to 1920. Many immigrants came to America seeking greater economic opportunity, while some, such as the Pilgrims in the early 1600s, arrived in search of religious freedom.
Here is the website I got this information from:
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www.history.com/topics/u-s-immigration-before-1965
