He wanted to expand the human knowledge of the word around them
Seward Peninsula in northwest Alaska, Bering Land Bridge National Preserve. Bering Land Bridge National preserve protects a small remnant of the 1,000 mile (1,609 km) wide grassland that connected Asia and North America during the last Ice Age.
(thanks to Google)
Fighting began between proslavery and antislavery forces
The correct answer for 1 is Fort Sumter
The correct answer for 2 is c. a larger population
Three should be c. a declaration to end slavery
as well since they gained a lot of support thanks to their declaration to end it.