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Treaty of Portsmouth

Peace Treaties and Territorial Settlements

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The Treaty of Portsmouth formally ended the 1904 to 1905 Russo-Japanese War. It was signed on September 5, 1905, after negotiations that ran from August 6 to 30, at the Portsmouth Naval Shipyard in Kittery, Maine. United States President Theodore Roosevelt was instrumental in the negotiations and won the Nobel Peace Prize for his efforts, the first American ever to receive it. The treaty recognized Japan's dominant position in Korea and awarded it Russia's lease on the Liaodong Peninsula, control of the Russian-built South Manchuria Railway, and the southern half of Sakhalin.

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