The answer to the first question is the first choice.
The answer to the second question is the third choice.
Answer:
Through a shared culture developed over time
By eliminating state requirements to make it easier to unity.
That would be Adolf Hitler, as stated in this source (History.com) "Hitler appointed a new Nazi government, and on March 13 the Anschluss was proclaimed. Austria existed as a federal state of Germany until the end of World War II, when the Allied powers declared the Anschluss void and reestablished an independent Austria."
South Korea is definitely not totalitarian, monarchist or communist. The correct answer is that it is democratic. (also it is true that it is a country with a strong economy, and it shares a border with a potentially hostile neighbor. )
To be honest that's all up to you...i,m going to the United States Marine Corps
