<P> The United States has been the world 's largest national economy in terms of GDP since at least the 1920s . For many years following the Great Depression of the 1930s , when danger of recession appeared most serious , the government strengthened the economy by spending heavily itself or cutting taxes so that consumers would spend more , and by fostering rapid growth in the money supply , which also encouraged more spending . Ideas about the best tools for stabilizing the economy changed substantially between the 1930s and the 1980s . From the New Deal era that began in 1933 , to the Great Society initiatives of the 1960s , national policy makers relied principally on fiscal policy to influence the economy . </P>
<P> The United States has been the world 's largest national economy in terms of GDP since at least the 1920s . For many years following the Great Depression of the 1930s , when danger of recession appeared most serious , the government strengthened the economy by spending heavily itself or cutting taxes so that consumers would spend more , and by fostering rapid growth in the money supply , which also encouraged more spending . Ideas about the best tools for stabilizing the economy changed substantially between the 1930s and the 1980s . From the New Deal era that began in 1933 , to the Great Society initiatives of the 1960s , national policy makers relied principally on fiscal policy to influence the economy . </P>
when did the us become the number one economy
when did the us become the number one economy
since at least the 1920s
since at least the 1920s