Portugal–Spain relations of Enlightenment. Until then the word Spain (Hispânia) was only a geographic location referring exclusively to the Iberian peninsula. It was only in the constitution of 1812 that the name "Españas" (Spains) was adopted for the country along with the use of the title of "king of the Spains". The constitution of 1876 adopts for the first time the name "Spain" for the Spanish state and from then on the kings would use the title of "king of Spain". Portugal, Castille and Aragon were allies in the "Reconquista" in which they reconquered land from the Muslim Moors in the south
Japan–Russia border into the Soviet Union in 1945. Russia treats the islands as an integral part of the country. There are no border crossing points on the Russian-Japanese border, as it is a purely maritime boundary. During the existence of the land border in Sakhalin (1905-1945), it was crossed by one road. Soviet–Japanese border conflicts Japan–Russia border The Japan–Russia border is the "de facto" maritime boundary that separates the territorial waters of the two countries. According to the Russia border agency, the border's length is 194.3 km. The two countries do not share a terrestrial border, although in 1905-1945 the Russian Empire,