One factor that contributed to the growth of slavery in the American South was A.
completion of the Transcontinental Railroad
B.
demand for cotton in the textile mills of the North
C.
development of cattle trails that linked Texas with railroads
D.
resistance to westward expansion by American Indian groups

“obamacare”: included a provision for government-run health insurance called “the public option.” was bitterly opposed by congressional republicans because most favored a “single-payer” plan. survived two challenges to its constitutionality. was partially repealed in 2013 in order to avert a government shutdown. led to the expansion of medicaid in republican controlled states.