This section is not for beginners! If you are just learning
calculus go to the section Calculus .
The genesis, by the creator, is tough reading:
The success of the Marshall Plan depended on the resuscitation of the coal mines and industries of western Germany (17). Most Europeans feared Germany's revival. Nonetheless, . officials hoped that Stalin would not interfere with efforts to merge the three western zones of Germany, institute currency reform, and create the Federal Republic of Germany. Marshall Plan aid, in fact, initially was offered to Soviet Russia and its allies in eastern Europe. But Stalin would not tolerate the rebuilding of Germany and its prospective integration into a western bloc. Nor would he allow eastern European governments to be drawn into an evolving economic federation based on the free flow of information, capital, and trade. Soviet security would be endangered. Stalin's sphere of influence in eastern Europe would be eroded and his capacity to control the future of German power would be impaired. In late 1947, Stalin cracked down on eastern Europe, encouraged the communist coup in Czechoslovakia, and instigated a new round of purges (18).