Please can anyone help me with this!! with an explanation is due today

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

Before world war 1 started, austria-hungry was wary of (spain or serbia) because of border disputes

Why did the third estate form the national assembly?