The document discusses several international events involving Theodore Roosevelt and his assertive foreign policy: 1) After the Spanish-American War, Secretary of State John Hay issued the Open Door Note to prevent European powers from dividing China into spheres of influence and to maintain equal trade opportunities. 2) Roosevelt helped broker an end to the Russo-Japanese War and gained international prestige for the U.S. in doing so. 3) Tensions arose in California due to increasing Japanese immigration, but Roosevelt resolved the crisis through the Gentlemen's Agreement which restricted Japanese immigration without openly insulting Japan.