The Soviet Union dominated politics in eastern Europe
1. Difficult during the winter.
2. Can't sail back.
3. Bad weather conditions.
I would type more but I can't see the rest
Following increased pressure from Southern politicians, Congress passed a revised Fugitive Slave Act in 1850. Part of Henry Clay's famed Compromise of 1850—a group of bills that helped quiet early calls for Southern secession—this new law forcibly compelled citizens to assist in the capture of runaway slaves.