The correct answers are "He was a dictator", "He was overthrown", and "He committed war crimes". Saddam Hussein was the leader of a terrorist group and lived his last days in the exile. Sadam Hussein was executed in the US after avoiding the intelligence forces of that country for many years. He was sentenced guilty for all the war crimes he committed during his life, with dead penalty by decrete of the judge.
Mesopotamia - cuneiform.
If that is what you meant.
Demographics is statistical data of a population. This can include how many people of each gender in a certain population, the occupations of the people, and basically anything that is statistical data.