The period of japanese history lasted for more than two hundred years

Why was russia drawn into a conflict with germany after ausria-hungary declared war on serbia ?

Were african-americans allowed to serve in the military in wwi?

Why are slanted roofs found on many buildings within russia and finland? a. to prevent ice slides. b. to prevent the build-up of water during heavy rains. c. to prevent heat from escaping during the clod winter months. d. to prevent snow build-up.