Do a All out attack on the western front before large amounts of US troops start pouring in. this offensive is also known as the spring offensive
Answer:
For the America's, disease rapidly killed many native Americans in the masses because they where not yet immune to them. Africa was immune to some European disease because of trade with India. Europe did not suffer as bad from any diseases from America or Africa. I think that's a good answer :)
A rigid class system is a manner of social organization in which, at birth, an individual already pertains to a certain group and social mobility is almost non-existent along lifetime.
A society which follows this model would prevent immigration. Newcomers usually pertain to the lower social classes, and if they know in advance that they will have no possibilities of improvement, they would probably choose a different destination. In the end, the most damaged ones by such a system are the national individuals who pertain to the lower social classes, as the structures that function in their country foster inequality and prevent them from improving their situation and living conditions.
Pope Gregory VII was critical in promoting and regulating the concept of modern university as his 1079 Papal Decree ordered the regulated establishment of cathedral schools that transformed themselves into the first European universities.
28th July 1914 - 11th November 1918