Answer:
a.
a self-propelled engine, powered by steam, diesel, or electricity, for pulling or, sometimes, pushing.
The ratification of the U.S Constitution is the correct answer.
Even though the 'Articles of Confederation and Perpetual Union' had been submitted for ratification in 1777, it wasn't until 1781 that a significant number of states approved it. The ratification of the U.S constitution was a very important event in the midst of the economic depression that the United States was going through.
B the removal of Jewish people from Germany
The goal of containment (Truman Doctrine) was to box in the Soviet Union to prevent them from effectively spread communism.
The Great Dictator was a comedic parody of antisemitism in Nazi Germany.
