What invention did galileo create or imporve upon

The correct answer is: "the scientific method".

Galileo Galilei (1564 - 1642) was an Italian astronomer, physicist and engineer, known as the  "father of observational astronomy" and "of the scientific method".

He conducted research on speed and velocity, gravity and free fall, the principle of relativity, etc. Through observational methods, he was able to describe the properties of such phenomena and to develop "laws" as a starting point for human understanding of them. He confronted the Roman Inquisition by defending the heliocentrism theory developed by Copernicus.

religion played a major role in the american revolution by offering a moral sanction for opposition to the british--an assurance to the average american that revolution was justified in the sight of god. the revolution strengthened millennialist strains in american.

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939