Answer :

United States is greater than the 21st century so far, and in many ways more successful entered the economy. 20. the two world wars in the first half of the century and has not only survived the global crisis, during the second half in the Soviet Union 40 years of the Cold War high inflation, huge unemployment and massive federal budget also successfully emerged from long struggled against the spreading problem to open up . Americans finally had an economic relief period in 1990; we have been able to stabilize prices, unemployment was held at the lowest level of the last ten years and was an unprecedented boom in the capital market.