What is one way immigrants to the united states in the late 1800s tried to assimilate?

This passage says that the government is necessary because . the passage states that checks and balances are needed to

:) during the cold war, people were afraid of communists, both outside and inside the united states. the red scare and mccarthyism that grew out of these fears were damaging to the american way of life. during the mccarthy years, many of the freedoms guaranteed in the bill of rights were limited. write a paragraph explaining what lessons can be learned from the mccarthy era about what u.s. citizens need to protect in order to preserve the democratic political system and the american way of life.

How did the environments in north america affect the development of america indian cultures in the period just before europeans arrived