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boundary is what it refers to hope this

explanation:

the soviet union wanted to impose communist governments in eastern europe.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.

discrimination! they faced a lot of racism