Respuesta :

andrewtc5502p0nwhr
America's economy grew by more than 400% between 1860 and 1900 Technological advances, expanding population, improved transportation, financial innovation, and new business practices combined to fuel this economic growth "Titans of Industry".
Kaikerscupcake
One factor was that immigrants were coming into our country, which led to cheaper work force. 

Another factor was that the US wanted to send more exports into other countries, and this really helped stabilize the economy.

I hope this helped you!

Brainliest answer is always appreciated!