What led to the development of the global positioning system
a.) the need to perform complex calculations
b.) launching a us satellite as a competition to sputnik
c.) tracking of sputnik through radio waves
d.) the need for safe disruption of information

Nscience we assume that the force of gravity behaves the same way beyond earth. using this assumptions, we can use the gravitational forces from the sun and moon to explain a: the tides b: a lunar eclipse c: the length of a day d: the revolution of the earth hurry i am timed : ) will give brainliest

Why does the author attempt to convince the reader that what he has described of the middle colonies is factual?

Free points + brainliest! answer this correctly and you shall receive! to obtain a class e license, you don’t need to a. be at least 16 years old b. complete a tlsae course c. pass the driving skills test d. be a u.s. citizen