Empire of JapanThe Empire of Japan or Japanese Empire, also referred to as Imperial Japan, was the Japanese nation-state that existed from the Meiji Restoration in 1868 until the enactment of the reformed Constitution of Japan in 1947. From 29 August 1910 until 2 September 1945, it administered the naichi (the Japanese archipelago and post-1943 Karafuto) and the gaichi (Korea, Taiwan, Kwantung Leased Territory, and pre-1943 Karafuto). The South Seas Mandate was a single Japanese dependent territory in the name of the League of Nations.
Sea of OkhotskThe Sea of Okhotsk (Okhotskoye more; Historically also known as Lamutskoye more, or as Kamchatskoye more; Ohōtsuku-kai; ) is a marginal sea of the western Pacific Ocean. It is located between Russia's Kamchatka Peninsula on the east, the Kuril Islands on the southeast, Japan's island of Hokkaido on the south, the island of Sakhalin along the west, and a stretch of eastern Siberian coast along the west and north. The northeast corner is the Shelikhov Gulf.
Russian Far EastThe Russian Far East (Дальний Восток России) is a region in Northeast Asia. It is the easternmost part of Russia and the Asian continent; and is administered as a part of the Far Eastern Federal District, which is located between Lake Baikal in eastern Siberia and the Pacific Ocean. The area's largest city is Khabarovsk, followed by Vladivostok. The region shares land borders with the countries of Mongolia, China, and North Korea to its south, as well as maritime boundaries with Japan to its southeast, and with the United States along the Bering Strait to its northeast.
Hokkaidois Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel. The largest city on Hokkaidō is its capital, Sapporo, which is also its only ordinance-designated city. Sakhalin lies about 43 kilometers (26 mi) to the north of Hokkaidō, and to the east and northeast are the Kuril Islands, which are administered by Russia, though the four most southerly are claimed by Japan.
Ainu peopleThe Ainu are an indigenous people of the lands surrounding the Sea of Okhotsk, including Hokkaido Island, Northeast Honshu Island, Sakhalin Island, the Kuril Islands, the Kamchatka Peninsula, and Khabarovsk Krai, since before the arrival of the Yamato Japanese and Russians. These regions are referred to as Ezo in historical Japanese texts. Official estimates place the total Ainu population of Japan at 25,000.
AmurThe Amur (река Амур, ɐˈmur), or Heilong Jiang (, Black Dragon River, hei1.long2-jiang1), is the world's tenth longest river, forming the border between the Russian Far East and Manchuria/Northeastern China. The Amur proper is long, and has a drainage basin of . Including its source river Argun, it is long. The largest fish species in the Amur is the kaluga, attaining a length as great as .
IrkutskIrkutsk (ɪərˈkutsk ; Иркутск; Buryat and Эрхүү, Erhüü, ɛrˈxuː) is the largest city and administrative center of Irkutsk Oblast, Russia. With a population of 617,473 as of the 2010 Census, Irkutsk is the 25th-largest city in Russia by population, the fifth-largest in the Siberian Federal District, and one of the largest cities in Siberia. Located in the south of the eponymous oblast, the city proper lies on the Angara River, a tributary of the Yenisei, about 850 kilometres (530 mi) to the south-east of Krasnoyarsk and about 520 kilometres (320 mi) north of Ulaanbaatar.
Trans-Siberian RailwayThe Trans-Siberian Railway, historically known as the Great Siberian Route and often shortened to Transsib, is a large railway system that connects European Russia to the Russian Far East. Spanning a length of over , it is the longest railway line in the world. It runs from the city of Moscow in the west to the city of Vladivostok in the east. During the period of the Russian Empire, government ministers—personally appointed by Alexander III and his son Nicholas II—supervised the building of the railway network between 1891 and 1916.
KhabarovskKhabarovsk (Хабаровск xɐˈbarəfsk) is the largest city and the administrative centre of Khabarovsk Krai, Russia, located from the China–Russia border, at the confluence of the Amur and Ussuri Rivers, about north of Vladivostok. As of the 2021 Russian census, it had a population of 617,441. The city was the administrative center of the Far Eastern Federal District of Russia from 2002 until December 2018, when the status was given to Vladivostok. It is the largest city in the Russian Far East, having overtaken Vladivostok in 2015.
Kuril IslandsThe Kuril Islands or Kurile Islands (ˈkʊərɪl,_ˈkjʊərɪl,_kjʊˈriːl; Кури́льские острова́; Japanese: "Kuril Islands" or "Thousand Islands") are a volcanic archipelago administered as part of Sakhalin Oblast in the Russian Far East. The islands stretch approximately northeast from Hokkaido in Japan to Kamchatka Peninsula in Russia, separating the Sea of Okhotsk from the north Pacific Ocean. There are 56 islands and many minor islets. The Kuril Islands consist of the Greater Kuril Chain and, at the southwest end, the parallel Lesser Kuril Chain.
