The plague came from the fleas on the rats and the rats traveled through ships and merchants ship coming from other countries. Once the rats with the fleas reached a city heavily populated, mass amounts of people died because the disease was contagious. To add to that the cities were extremely dirty and had dead people everywhere.
The best option in terms of the effect of negative population growth on developed countries would be "t<span>ax revenues will not be sufficient to support the oldest citizens," since older generations usually require more money than younger generations.</span>
Answer:
Legislative branch has the power to declare war
Harsh jungle environment
difficultly identifying the enemy
demoralization
there was a chemical used called agent orange, but it was used by the U.S. so i dont think it would be categorized as something that american soldiers faced.
