Imperialism was basically the tension over colonies. This was a widely recognized reason for starting off WWI. Colonies were places that were taken in to control by other ruling countries. This made countries more powerful and <span>dominant, so this is linked to alliances that were made back then.</span>
Commodore Matthew C. Perry
Perry was warmly received by Japanese officials who had acquiesced and prepared a treaty that fulfilled many of Fillmore's demands. The Treaty of Kanagawa ensured the protection of American property and opened the ports of Hakodate and Shimoda to trade.