"the particular cultures and societies of africa and of the americas discussed in this chapter (strayer) developed largely in isolation.” what evidence would support this statement, and what might challenge it?

By the end of the 1800s, there was a change in the nature of the immigrants coming to the united states. immigration from northern europe—england, ireland, germany, and scandinavia—declined, while immigration from italy, russia, and austria-hungary grew. in fact, between 1900 and 1910, more than three-fourths of all immigrants came from these three countries. unfortunately, these countries were far removed england, the home of our founders, and the immigrants who came from them had a hard time adjusting to life in their new country.

How did the governor's order that only georgian officers could command georgia's troops demonstrate a problem in the south

Can someone me out with this , i'm putting 30 points on it