Answer:
fled their homes to move permanently to the West.
Explanation:
<span>b-the invasion of Poland</span>
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".
It has a very limited supply of<span> natural resources which could affect its economic growth</span>