147
The economic history of the United States is about characteristics of and important developments in the U.S. economy from colonial times to the present. The emphasis is on economic performance and how it was affected by new technologies, especially those that improved productivity, which is the main cause of economic growth.


67
Income inequality in the United States has increased significantly since the 1970s after several decades of stability, meaning the share of the nation's income received by higher income households has increased.


590
The economy of the USA grew quickly in the 1920s for five main reasons. This growth in the 1920s greatly affected the USA throughout the 20th century and today as the world superpower.