Which amendment extended suffrage to African American men?

In National Federation of Independent Business v. Sebelius (2012), the Supreme Court ruled that states did not have to expand their Medicaid coverage because

A. the provision left them without a "genuine choice" as to whether to comply. B. health care is purely a state issue. C. health care is purely a federal issue. D. the provision violated the Constitution by not requiring more state funding for the program. E. the provision created a tax that was not permissible.

According to neorealism, a bipolar world is more stable than a multipolar world because:

a. There are fewer disputes. b. There is less uncertainty. c. There are fewer commitment problems. d. b and c are correct.