Why did mesopotamia create a writing system

Which factor was a major cause of the great depression of the 1930?

How does an appellate court differ from a trial court a. an appellate court usually has a jury b. an appellate court decides issues of facts c. an appellate court examines more witnesses d. an appellate court reviews another courts decision

Why did the collapse of the soviet union and the power vacuum in the balkans lead to bosnian genocide?