The Bubonic plague and the raids by Vikings.
The 19th amendment was passed in 1919 and it gave women the right to vote :)
Answer:
Because housing prices were rising at a very rapid rate during these years.
It was. The countries that were under new imperialist rule were countries that wanted to gain independence from their former colonizers. Those who helped them like the US or Britain exploited the situation by helping the countries and later placing the people that suited them as rulers of those countries.
Please correct me if I'm wrong!! :)