Just 3 reasons? ok then, they were unprepared for the desert climate, they had a poor reputation with the locals, and they were considered "devils" so no one wanted anything to do with them.
During the first two years of World War II, the United States had maintained formal neutrality as made official in the Quarantine Speech delivered by US President Franklin D. Roosevelt in 1937, while supplying Britain, the Soviet Union, and China with war material through the Lend-Lease Act which was signed into law on.
“ The rebels promised to provide laborers to help the United States build Panama Canal. “
I think it's either A or C. I'm 80% sure it's A
Citizens suddenly got fair trials where actual justice would be served