How did the Missouri Compromise (1820) affect the expansion of slavery into western territories? A.
It allowed slavery in Missouri and western territories south of 36-30 line.
B.
It permitted Missouri to have slaves under the principle of popular sovereignty.
C.
It forced Missouri to be a free state but permitted western states to choose slavery.
D.
It allowed all western areas to become slave states as long as they did not outnumber free states.

Interest groups representing businesses and investors are often among the most successful lobbying groups for all of the following reasons, except a. such groups have the financial resources to mount sustained campaigns on their own behalf b. these groups' members contribute heavily to many legislators' campaigns and in so doing gain greater access to legislators c. these groups have often been in existence for decades, allowing them to both master the legislative system and develop close ties with legislators d. the members of these groups make up the majority of voters in many districts