Possibly their location in asia. They were on an island and lacked many natural resources.
Each branch<span> is restrained by the </span>other<span> two in several ways. For example, the president may veto a law passed by </span>Congress<span>. </span>Congress can<span> override that veto with a vote of two-thirds of both houses. </span>Another example is that the Supreme Court may check Congress<span> by declaring a law unconstitutional.</span>
The answer is held the country together prior to the implementation of the constitution. I hope this helps. :)
When crop is burnt it burns the bad weeds and other pests and when it re grows it grows back healthier we see this today in wildlife parks