How did european exposure to infectious diseases actually become an advantage

How did world war i contribute to the events leading up to world war ii? (a)germans wanted to expand their nation to regain territory in the soviet union. (b)britain and france wanted to force germany to make reparation payments. (c)germans hated the versailles treaty and supported hitler's actions to defy it. (d)the soviet union wanted to take over german territory in eastern europe.

According to the aztec history, how did the aztecs know where to build their new city of tenochtitlan? why was this a good location?

Why were colonist mad about the tea act if it actually lowered the price of tea