I am assuming they settled there because the land must be good for crops and agriculture since it is called the "Fertile Crescent", fertile which must mean the land has good soil.
The noteworthy about the work of Daniel Burnham, Louis Sullivan, and Frederick Law Olmstead is they constructed high rises in urban areas on both coasts. They all took a shot at structures for the 1893 Chicago World's Fair, which presented numerous advancements.
