Question

• how did the war change everyday life for women and african americans?
• would the league of nations have worked better if the u.s. had joined?

Explanation:

The first question is about how war impacted the daily lives of women and African Americans, which relates to studying social groups and their experiences, falling under History (a subfield of Social Science). The second question is about the effectiveness of the League of Nations with U.S. participation, also a historical inquiry about international relations and historical events, so History (Social Science subfield) applies.

Answer:

For the first question: The war (e.g., World War I/II) changed women's everyday life by opening up new job opportunities (like in factories, replacing men who went to war), gaining more social and economic independence, and shifting gender roles. For African Americans, it led to the Great Migration (moving from rural South to urban North for war - related jobs), increased political activism (due to their contributions to the war effort), and some gains in civil rights awareness, though discrimination still persisted.

For the second question: If the U.S. had joined the League of Nations, it might have worked better. The U.S. was a major economic and military power. Its membership could have provided more financial resources, military backing for collective security measures, and greater international influence to enforce the League's mandates. Without U.S. participation, the League lacked a key global power, making it harder to address aggressions (like Japanese expansion in Manchuria or Italian aggression in Ethiopia) effectively.