When was this source written? given the time it was written, how is this source in informing you about what happened when columbus sailed to the americas in 1492? explain your answer.

“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 was partially repealed in 2013 in order to avert a government shutdown.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.