yes
No.
The simple fact that he's the first black president, he has no other distinguishing features or motives.
He was happy no doubt. Though its sad that it has come to this, that we elect presidents based on anything other than their political merit.
Being over 6' tall .
Barack Obama, whose father was black, is the only US President with any known African ancestry. The related link is likely the source of your question. I think the moral is that anybody can post anything on the Internet, but that posting does not make it true. On the other hand, if you are asking about other places in the world, there have certainly been black presidents or prime ministers in several African countries, including Ghana, Uganda, and South Africa.
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No. There were other African Americans in America before him.
He already has won!
This is impossible to answer because President Obama is the first black president the US has ever had. If you are asking about other countries, that would be an unfair comparison, since he never lived in those countries nor ran for office there.
He had similar experience to some other former presidents: he served in congress, and he worked in the private sector. Mr. Obama also had a background in law and in political science.
President-elect Obama.
There have been numerous presidents that have died over the years. As of September 2014, the former presidents that are still alive are Barack Obama, Bill Clinton, George Bush Sr and George Bush Jr, and Jimmy Carter. The other presidents have all passed away.