Hmmmm, I think it is slavery
Catherine the Great transformed the royal residence of St. Petersburg, the Hermitage, into a center of culture, painting, and performing arts.
Plataea and Mycale have great significance in ancient history as the battles that decisively ended the second Persian invasion of Greece, thereby swinging the balance of the Greco-Persian Wars in favour of the Greeks.
Answer:
the ability to amend the constitution is almost crucial to the state of our nation's future. As times change, people change, right? Well, when people change, the nation overall changes. Therefor, we need to be able to mold our "rule book" to protect our people in the future as well as the present.