Rail transport in the Soviet Union the Soviet Union collapsed. Twenty other stations were under construction in 1985. The country's rapid transit system was the most intensively used in the world. The Soviet Union was a pioneer in the development of the diesel locomotive to replace the steam locomotive (dieselization) on non-electrified lines. But the USSR failed to make steady progress and while they lead the United States at first, they soon fell behind and their last steam locomotives were retired about 15 years later than for the US. The first mainline diesel locomotive in the world began running in 1924 in the USSR but it
Spanish language in the United States in 1991. This policy was reversed in 1993 when a pro-statehood party ousted a pro-independence party from the commonwealth government. The relatively recent but large influx of Spanish-speakers to the United States has increased the overall total of Spanish-speakers in the country. They form majorities and large minorities in many political districts, especially in California, Arizona, New Mexico, and Texas, the American states bordering Mexico, and also in South Florida. Mexicans first moved to the United States as refugees in the turmoil of the Mexican Revolution from 1910–1917, but many more emigrated later for economic reasons. The large majority of