Ended the party--in the War of 1812, the northern Federalists lost trade with Great Britain.
Federalists believed the US must become an industrial country not a farming country. The Hartford Convention was a discussion of New England states leaving the Union. When the war ended, they no longer needed to leave because they could trade with Great Britain again and the country now were united in creating an industrial country with a national banking system. The Federalist party disappears and the US is a one party country until the 1828 election.
Explanation:
Kansas become a political and natural Battleground for proslavery and antislavery forces. The Kansas Nebraska act set in motion a plan that was supposed to decide the Kansas question through a peaceful Democratic process
Slavery was THE great debate of the 1850's as was the question of continuing a union that threatened the lives and property of the South. It caused Lincoln's election in 1860 and fueled the movement to secession and war. Slavery was the dividing point over which there was a limit to the compromises that could be effected. It clearly drove the decade as it had shaped the whole century.
Nephele was a cloud nymph in Greek mythology. Also known as Aries