the answer is C, Was the first foregin group to rule all of china
In the context of World War II, the 'Big Three' consisted of the leaders of the three most powerful countries on the side of the Allies. They were Winston Churchill, the Prime Minister of Great Britain, Franklin D. Roosevelt, the President of the United States, and Joseph Stalin, the Premier of the Soviet Union.
https://study.com/academy/answer/who-were-the-big-3-in-world-war-ii.html
Equity of opportunity/ Educational Equity.
D. The line between women's and men's work blurred as they helped each other do essential work.