Japan's invasion of China in 1937 and Germany's attack on Poland in 1939 led directly to:

1. The beginning of WWII in Asia and Europe
2. A meeting at Yalta between the United States and Soviet Union
3. A conference at Munich for European leaders
4.The withdrawal of Britain and France from European affairs

I'm pretty sure the answer is 1

Found this on google, "The amendments made major concessions to southern concerns. They forbade the abolition of slavery on federal land in slaveholding states, compensated owners of runaway slaves, and restored the Missouri Compromise line of 36 degree 30′, which had been repealed in the Kansas-Nebraska Act."

Sorry i don't know the answer.