Mesopotamian (Sumerian) civilization
Manifest destiny was the idea that the United States would stretch from sea to sea as a beacon of liberty. Texas had lots of American immigrants at the time and had a lot of slave plantations that could of extended the south. Texas also had recently broken free from Mexico, and was made by American settlers who made their government based on the US. So, because of all this, America decided to annex Texas and incorporate it into the Union.
The system of checks and balances makes sure that one branch of gov. Doesn't get more powerful than the other by giving different powers to different branches. Like a certain branch can't do something without the "thumbs up" from the other branch. For example, the Executive Branch can veto bills from the Legislative Branch, but the Legislative Branch can override the veto. Hopefully that helped!!
Answer:
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Explanation:
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