The goals of containment were to keep communism from spreading to other countries. The truman doctrine was the policy of the US to support free peoples who are resisting soviet pressures to become communist.
The migration into the United States of people throughout history is part of the world wide phenomena of migration because individuals entering the U.S. are coming from regions all over the world for a variety of reasons. Most of these immigrants are economic immigrants seeking employment and greater opportunities in an economy like the U.S. which is usually stronger than their home economy which is why they decide to leave. Also other immigrants are fleeing conflict, reuniting with family, seeking education, or other factors. In general migration is representative of a push and pull model because there are factors that push migrants to migrate elsewhere such as war, disease, a weak economy, etc. and there are factors which pull migrants to a place such as a stronger economy, increased security, or better opportunities to live better.
The battle took place on April 19, 1775. This battle along with the battle of Concord were the first battles of the American Revolutionary War.
