In the sixteenth century, what changed in the study of philosophy?

Im not sure if this is right but here. Mastered Greek, Latin, help discover Philosophers, technical thinking that required careful observation and mathematics, telescopes, microscopes.

 mastered greek, latin,help discovered philosophers technical thinking that required careful observations and math,telescopes,microscopes.
hope this helps you.

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.