Answer:
More Americans began to hold jobs in industrial manufacturing
<em><u>hope it help you</u></em>
<em><u>thx</u></em><em><u> </u></em><em><u>for POINTS</u></em><em><u>~</u></em>
Explanation:
American frontier, in United States history, the advancing border that marked those lands that had been settled by Europeans. It is characterized by the westward movement of European settlers from their original settlements on the Atlantic coast (17th century) to the Far West (19th century).
They believed that the world was standing still and that it is curved. That is why on one side it seems as if the sun is rising and on the other it seems as if the sun is setting. They also believed later when Ra was created that it was related to him and that the sun coming out is his birth. There are many myths regarding this.
The answer is A because people are still racist and women could finally join only 2-3 years ago.