During the Berlin Conference, it was "Belgium" who was granted control of the Congo Free State, under the command of King Leopold II from around 1885 to 1908.
While there were many other factors, threats and violence definitely were key aspects to Hitler's rise to power. His use of terror tactics made people obedient through fear. After acting upon his threats, they knew if they didn't follow him, there was a good chance they would die. He used a sort of manipulation that while brutal, tends to be effective, as portrayed through many events and leaders in history, such as the French Revolution, Mao Zedong (China), Stalin (Russia), and Leopold II (Congo).
The Nullification Crisis was a conflict between South Carolina and the federal government. South Carolina felt states had the right to nullify federal laws.
The answer is the last one.
