John Quincy Adams
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Different customs led to many disagreements and skirmishes. The Powhatan tribe was very distrustful of the white settlers and for good reason. The European settlers were actually trying to push natives off their rain so that they could claim it for themselves.
Answer: Checks and balances.
Explanation: The whole point of establishing a system of checks and balances was to prevent one of the branches of government from getting too powerful. In order to prevent this, each branch of government has the power to stop another branch of government in the event that they are abusing their powers. In the executive branch (the president), this includes the ability to veto bills. In the judicial branch (Supreme Court), this includes the power to declare an action unconstitutional. And in the legislative branch (Congress/Senate), they have the power of impeachment.
The best reason why direct democracy would not work well in the United States is that "<span>large groups of voters would be difficult to manage", since the population of Ancient Greece, where it was practiced, was much smaller than the current US population.</span>