the whigs did not want conquered territory to become slave states
The Whigs.
because they thought it would be easier to defeat them so the war could end quickly
the whigs did not want conquered territory to become slave states
whigs
"Conscience Whigs".
They were called "Conscience Whigs".
The Whigs supported an American victory in the revolutionary war because they feared that if George III triumphed, his rule at home might become tyrannical.
During the American Revolutionary War, The Americans called the colonists on the American side Whigs and those on the British side Tories. The English term used for those on the British side is Loyalists. Many American books are now going over to the terms Patriots and Loyalists. (The terms Whigs and Tories were borrowed from England. The Tories supported the King. The Whigs supported Parliament. Only, in the United States, the Whigs supported the Continental Congress.)
A Federalist wants a strong national government, a national bank, and large industries. While on the other hand a Democratic-Republican wants a strong state government, opposes a national bank, and wants small businesses and farmers.
The Whigs.
Evil, pro slavery and unfair.
"The North" qualifies as such. At a time when slavery was becoming a hot issue in American politics, they were afraid "The South" would use the newly conquered territories to increase slavery and get the upper hand. You should be aware that the Mexican-American War (1846-1848) was an extension of the Texas Revolution (1835-1836) which was by itself, motivated by slave owners.