Treaty of Portsmouth Treaty of Portsmouth The Treaty of Portsmouth formally ended the 1904–05 Russo-Japanese War. It was signed on September 5, 1905 after negotiations lasting from August 6 to August 30, at the Portsmouth Naval Shipyard in Kittery, Maine, United States. U.S. President Theodore Roosevelt was instrumental in the negotiations and won the Nobel Peace Prize for his efforts. The war of 1904–05 was fought between the Empire of Russia, an international power with one of the largest armies in the world, and the Empire of Japan, a nation which had only recently industrialized after two-and-a-half centuries of isolation. A series of
U.S.–Austrian Peace Treaty (1921) formed the nucleus of the Austro-Hungarian Empire – was defeated by the Allied Powers, one of which was the United States of America. The US government declared war on Austria-Hungary on December 7, 1917. At the end of the war in 1918, Austria-Hungary disintegrated and Austria was established as an independent republic. In 1919, the victorious Allied Powers held a peace conference in Paris to formulate peace treaties with the defeated Central Powers. At the conference, a peace treaty with the Austrian government was concluded. Although the US government was among the signatories of that treaty, the Senate refused to