The correct answer should be <span>b. the Industrial Revolution
It is after this period and during, that labor groups began to organize themselves.</span>
Answer:
The Mexican army attacked them. The main cause of the war was the westward expansion of the United States. All through the 19th century Americans believed it was their right to expand westward. At the time they believed they could conquer the people already living on the land and take it for the United States.
Explanation:
American Troops..............
War
War times make people very patriotic or nationalistic.
The answer should be C :)
