McCarthyism is the correct answer you're looking for
Answer:
Option: Abundant resources
Free land.
Explanation:
Oregon attracted settlers because of abundant land, fertile soil, and mild climate. The rich fertile lands of Oregon brought thousands of pioneers. People from Missouri, Indiana, and Illinois found the rich farmland in areas like the Willamette valley persuasive. Trappers also attracted because of the abundant fur-bearing animals. The land was free to those who could make it the Oregon Territory. People began to assemble their belonging and took the trail in wagons pulled by oxen.
Checks and balances operate throughout the U.S. government, as each branch exercises certain powers that can be checked by the powers given to the other two branches. ... Within the legislative branch, each house of Congress serves as a check on possible abuses of power by the other.
Answer:
Prohibiting slavery in the territories.
Explanation:
According to the ruling it was decided that Congress had exceeded their authority when ratifying the Missouri Compromise, and therefore "had no power to forbid or abolish slavery in the territories west of Missouri and north of latitude 36°30" (Britannica.com).