I would say B) and D) apply to some of the differences between a Prime Minister and a President and also A). In addition, a Prime Minister is head of the government but may not be head of the state which may be a President in the same country or perhaps a Governor General.
The answer is D. <span> invention of the first steel tools
Actually, this very topic is still a hot debate among scientists because the shift happens on different reasons in each region of the world.
But one thing they have in common is that Steel tools give the member of early societies the capabilities to rake uplands and cutting up crops that really useful in farming and herding.</span>
The Executive Order 9066 was enacted because many Americans, after hearing of the December 7th attack, came to distrust the Japanese Americans, and thought of them as spies, secretly sending information to mainland Japan in exchange for money, etc. The Government used Executive 9066 to "protect" the Japanese, however, the Japanese received poor housing and had the bare necessities. Later on in the war, conditions improved.
If you want a account, read "thin wood walls"
<em>i belive it is 46 million</em>
