<span>U.S. Steel hired African American and Mexican workers as replacements; clashes between company guards and strikers were frequent; the strike collapsed in 1920, setting back the union cause for more than a decade.</span>
Answer:
Opportunities - Employment equality, equal rights
Challenges - returning men would demand their jobs back
Explanation:
The World War II saw many men going to fight in the wars in different countries. This meant that all able-bodied men were either recruited or conscripted into the army. Thus, many men left, leaving behind children and women. Thus, there was a need to keep production going in the home countries. In the UK, for example, women worked in factories. Some even took up clerical jobs. Some repaired airplanes, some worked as communication officers and photograph analyzers. This gave women a platform for equality.
Unfortunately, this was to end with the return of the men who had gone to fight in the war. However, women had made a mark for themselves in the arena.
D. It allows citizens of many European countries to freely travel across the continent.
