What obstacles did us troops fighting in vietnam face?

On the ground in Vietnam, U.S. forces faced challenging environmental conditions as they tried to engage an elusive enemy. Much of the fighting in Vietnam took place in hot, wet jungle terrain. Soldiers suffered from heat stroke, malaria, trench foot, fungal infections and other ailments brought about by hot, humid conditions.

europe churches founded monasteries and universities that studied philosophy and nature.

hope this : )

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.