I would say that World War Two is a continuation of World War One because without Germany losing World War One Hitler would not have been able to take power in Germany. Another reason would be that without World War One Mussolini would not have had the right political climate to take power in Italy.
The Kansas/Nebraska Act was passed as the loggerhead over slavery in Kansas and Nebraska was preventing a railroad from being built.
Senator Douglas and President Pierce drafted the bill and signed it to allow for the passage of the Transcontinental Railroad
Europe.. some parts of Asia and India.