Answer:
the Galilean Invariance and discovery of Isochronism in pendulums.
Explanation:
Galileo is the first known person who studied the skies in detail with a telescope. He made numerous significant discoveries in astronomy including the Phases of Venus and the four largest moons of Jupiter. His contributions to science include the Galilean Invariance and discovery of Isochronism in pendulums.
Hoped that helped:P
<span>The on going war in Vietnam was the cause for his sharp drop in popularity.
Hope that helped.</span>
The main reason why Mikhail Gorbachev had trouble retaining support from hard-line communists was that he was more willing than most to "talk" with the United States in order to move the two countries forward out of hostile ground.
Answer:
Spain gained control of the Oregon Country
Explanation:
Spain gave the United States Florida in return for payment in the form of the county
