<span>Minamoto Yoshitsune, led his clan to victory against the Taira near the village of Dan-no-ura.
</span>
Plumbing was more of a luxury/comfort for people that also made their life easier. Baths were common and were usually taken while standing up in public baths. Bathing was also used for ceremonial purposes in religious services and rituals. Toilets were only limited to those who could afford them, so the upper class. Lower classes used urns or sump pots. Upper class toilets were stacked bricks with a hole that would drain out. Plumbing on the 2nd floor though was led by pipes to the streets. Limestone was used to prevent leakage.
They traded Silk, and received things like, wool, silver, gold and ivory.
Im not sure what the answer is to #1
For Montesquieu, despotism was one of the worst threats for a government. He pointed separation of powers as the best way to prevent it, in which legislative, executive and judicial power was excercised by different bodies of government, and these bodies were ruled by supreme law.
The system of checks and balances is very important for the U.S. government, since it was developed to assure that neither of the government's branches would empower too much. The writers of the U.S. Constitution developed a system that divides power between legislative, executive and judicial, and incorporates several limits and controls on the powers of every branch.