Dust, famine, sickness, unfirtile land, native Americans
Possible points to discuss: both claimed millions of lives and spread quickly across country borders; no one understood the cause of either disease; no one had a cure for either disease; diagnosis was almost certainly a death sentence; people often deserted those who fell ill because of the fear of contagion spreading; suppositions of how one could become infected were often not true; animals were involved in the initial spread of each disease (rats and primates); neither disease had an official name for quite some time.
It escalated when North Korea Invaded South Korea, When the UN became involved in the conflict to stop war, and also when the US sent in troops and medical units to support South Korea.
So, D
