Who is the 9th president of the u. s?

The 9th president of the United States is William Henry Harrison. He was the oldest president to be elected at the time. He was also the president that served the shortest time in office. He died due to an pneumonia. His time in office was from March 4, 1841- April 4, 1841.
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1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.