The correct answer is that Soviet found it difficult to compete in the international market. The United States gained control in the exports of the grains and the fuel prices also hiked. Thus, Soviet's economy was ruined and it had to borrow money from the West. Soviet was also technologically backward and was not having up to the mark machinery for production and corruption prevailed at the top levels, which discouraged the advent of new technologies. Soviet had plenty of natural resources, but they were not able to utiltize them fully and more of their funds were wasted on arms and military.