-The increase of immigrants
-The aftermaths of WWI
I really don't know if what I said is correct, but I just thought of it as of what happened before 1920
In western europe and north america, scientists began to understand the causes of infectious diseases at about what point in history?1850
Iy is called a confederation
Darwin found evidence of evolution meaning that everything evolved from something and didn’t just magically appear. In many religions it says that a god created humans or that humans came from another realm