The u. s. president at the time of the stock market crash in 1929 was a)herbert hoover. b) woodrow wilson. c) william mckinley d) calvin coolidge.

 A) Herbert Hoover

Herbert Hoover began his service as President of the United States in 1929.   He was in office when the Great Depression began, and was blamed for the fact that the country struggled as it did.  The problems that led to the Depression had been building up for years before Hoover took office, but as the leader of the country when the troubles hit, he was the one who took the bulk of the criticism.  And Hoover really had no solutions to the problems.  In the 1932 presidential election, he was defeated by Franklin D. Roosevelt.  Roosevelt implemented "New Deal" policies to combat the Depression.

A) Herbert Hoover

Explanation:

Herbert Hoover was elected president in 1928. Oddly enough, he was not reelected in 1932.

c. it required that townships set aside land for public schools.

these civilizations were located around fertile rivers, where they could produce an abundance of crops