It's roads to connect different parts of their empire. Just finished the test :)
Bushido mentions the eight virtues of a Samurai being: Morality, courage, compassion, politeness, honesty/sincerity, respect, loyalty, character plus self-cControl. For a detailed explanation on each virtue visit our Web site at www.scrumsolution.co.za/Blog/Bushido.2
Germany prompted the United States to join World War I because of it's violation of the pledge for unrestricted submarine warfare in the North Atlantic Ocean and Mediterranean Sea, as well as enticing Mexico to turn against the United States. I hope this helps :)