Answer: The Constitution has been changed by basic legislation by Congress, actions taken by the President, key decisions of the Supreme Court, the activities of political parties, and ect.
Explanation:
Answer - Tsar Alexander ll
Reasoning - It wasn't untill after Alexander 1. Then came the second which he later ended up freeing serfs.
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."
No, it is false that one immediate outcome of the Battle of Thermopylae was that Athens and Sparta finally united, since this battle resulted in a Persian Victory.