Who built the world’s first liquid-fueled rocket?

What principle did president truman invoke in sending u.s. troops into south korea without first asking congress to declare war?

Was the amassing of men, equipment, and supplies for the 1944 invasion of europe. operation varsity operation nordwind operation dragoon operation overload operation torch

How did slavery end in the united statesa. it ended with the emancipation proclamationb. it ended when the union won the civil warc. it ended with the fifteenth amendmentd. it ended with the 13th amendment