What country did catherine the great rule

Catherine the Great ruled Russia.

Explanation:

Catherine II, also known as Catherine the Great, born Princess Sophie of Anhalt-Zerbst, was Empress of Russia from 1762 until 1796, the country's longest-ruling female leader.

c. the dred scott v. sandford case,

the correct answer is d

a conference committee is a group of congress representatives appointed by the senate and the house to reach an agreement over a bill that had different versions in each chamber. this is due to the fact that, to pass a law. both the house and the senate must agree on the exact same content and wording of the bill to present it to the president.