In 1905, President Theodore Roosevelt, who hosted the peace conference in Portsmouth, New Hampshire, after the Russo-Japanese War, argued for the return of Manchuria to Manchu-ruled China and for a balance of power in East Asia. The war ended up making the US an active participant in China’s affairs.
1905年日俄战争后，西奥多·罗斯福总统在新罕布什尔州朴茨茅斯举行了和平会议，他提出把满洲归还给满族统治下的中国，并寻求在东亚建立势力平衡。日俄战争让美国成了中国事务的活跃参与者。