This is true. Many kings would plan and carry out invasions to gain goods, land and other loot and to expand their rule because many of them worried that another power would get too strong and take over their kingdom, and every king wanted to avoid that because they had become very fond of being king.
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it was the largest empire in pre-Columbian America. Ilqmd I think its a political and administrative structure and is considered by most scholars to have been the most developed in the Americas before Columbus' arrival.
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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.