How was the reaction to the wave of immigrants coming to America in the 2000s similar to the reaction to immigration in the 1920s? A. Immigrants were welcomed for their labor and contributions to tax revenues and the economy.
B. There was pressure on immigrants to become American citizens to prove their loyalty.
C. In both eras, the American people feared the unknown of what it would be to have immigrants coming to America.
D. In the 2000s and the 1920s, the American people feared that Latin American countries would invade the United States.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

answer; i believe the correct answer is (the willamete valley);

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.