There were lots of foreign changes that presented challenges for the US. I'll give you a few examples from different time periods. First would be when England wanted to tax the Americans in the Revolutionary period. They did this to try and restrict America's freedom. Another example would be that Russia had spies during the cold war period. This was to gain intelligence of the US war plans. Also when Germany sent the Zimmerman Telegram to Mexico during the WWII period. This was to get Mexico to launch a surprise attack on the US.
<span>(a) Organic Solidarity. Organic solidarity is social unity where labor results in people depending upon one another; contrasted to mechanical solidarity. This explains the things that bind an advanced, industrialized society. Preindustrial societies are different as they are societies which are not industrial.</span>
Answer:
-urban areas
Explanation:
Assuming that we are speaking about the Great Migration of the United States, which is the period, from 1916 to 1970, when a large number of African Americans migrated from the South, to the North.
The migrated to the North searching manufacturing jobs in the industrial cities: Chicago, Detroit, New York, Philadelphia, Buffalo, etc.
Thus, the answer would be urban areas.
