More people came to united states and their were still racism , so that affect the immigrants coming
<span>Something that cannot be divided any further. Hope this helps!
It would help me if you gave me brainliest. :D
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The United States preserves natural land, wild life, and historic treasures by making them national parks or monuments.
The pre-1890 expansion period in the US was marked by economic expansion (expansionism) fueled by, industrial growth, demand for fertile land, economic opportunities, and used economic policies after the closure of the revolutionary war while the post-1890 American expansion (19th C) was marked by imperialism, military expansion and formulation of policies to increase US powers, i.e. US signed a treat with China to gain diplomatic and trade relations resulting in the US taking over the Pacific ports.