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.
False false false no hindrance to civil right movement
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Most of the new immigrants lived in the cities and had to compete for low-paying jobs, so it's D.) worked at challenging jobs in the cities
The purchase of the louisiana territory, which he bought from france
