Answer:
Governments
Explanation:
The government collects taxes from its people and used that money to invest in public projects like roads and public schools. They also use taxes for other public programs and government function costs.
It has changed dramatically. The US economy has been on an upward trajectory for the past 50 years due to economic expansion and the way the country is being run. While there were downfalls in certain phases, the general trajectory has been positive.
