１９世纪末２０世纪初，沙俄在我国东北急剧扩张势力，同日本发生了尖锐的对立。日本为与俄国在我国东北争夺势力范围，同俄国在中国东北的南部进行了一场争霸战争，结果沙俄战败。１９０５年通过《朴茨茅斯条约》日本不仅霸占了朝鲜，而且占领了我国东北的南部（南满），即原 In the late 19th and early 20th centuries, Russia sharply expanded its forces in northeast China and sharply opposed Japan. Japan contested with Russia in the sphere of fighting for power in the northeast of our country and conducted a hegemony war with Russia in the southern part of northeast China, resulting in the defeat of tsarist Russia. In 1905 through the “Portsmouth Treaty” Japan not only occupied North Korea, but also occupied the southern part of the northeast (South Manchurian), that is, the original