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
Conservation in the United States has sparked the need for protection. Many of these resources were barely touched less than half a century ago but have been drained in several situations. One of these resources, water, is key to survival of almost all life but is being used quicker than it is replenished in many states within the United States. This has created the need for greater conservation which has been met by new techniques and technologies for both reducing the amount of water being used and increasing how efficiently it is being used. Some of these methods are as simple as replacing the fixtures