The answer is European nationalism
Answer:In the end, Texas was admitted to the United States a slave state. The annexation of Texas contributed to the coming of the Mexican-American War (1846-1848). The conflict started, in part, over a disagreement about which river was Mexico's true northern border: the Nueces or the Rio Grande.
Explanation:
The Crisis of the third Century was a period of extreme upheaval for the Roman Empire.
The civil war ended slavery.
It was very, very important for women to start working during the war because so many people were deployed that the demand for jobs in factories and other places was far higher than there were people available. Also, there were not enough women in the workforce at that time to fill those open positions. They filled many jobs in making supplies for war (that would normally be filled by men). Initially it was difficult to recruit the women (who were originally fitting the bill of "housewives"), and this is where those "We Can Do It" signs with "Rosie the Riveter" came about.