Which of the following things were invented or first used in the 1950s? heart transplant chicken-pox vaccine microwave oven personal computer barcode laser

What led to violence in kansas in 1854? a.) northerners and southerners disagreed over the results of the slavery vote. b.) people in kansas wrote the fugitive slave law. c.) people voted for kansas to be a free state. d.) nebraska was split into kansas and nebraska

Why did the soviet union lose the cold war?

In ww1 where did france find laborers to with their war movement? ? & what country did the french fear?