Answer:
Because he left office peacefully and willingly.
By being the first president to leave office this way, he set a precedent and marked the first peaceful transfer of power between upcoming and current presidents. Since then, the loser of presidential elections has willingly and peacefully surrender power to the winner.
Geography influenced the development of Tenochtitlan because at first, the land was full of water, but then the Aztecs reclaimed land from the lakes by sinking timbers into the water to serve as walls and filled the area between the timbers with mud, reeds, and boulders.
Arguing that he would rather have “birds than airplanes,” in the 1960s, Lindbergh threw his support behind the World Wildlife Fund and the International Union for Conservation of Nature and Natural Resources.