I don't understand your question.
Answer:
Comets go around the Sun in a highly elliptical orbit. They can spend hundreds and thousands of years out in the depths of the solar system before they return to Sun at their perihelion. Like all orbiting bodies, comets follow Kepler's Laws - the closer they are to the Sun, the faster they move.
Explanation:
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the transcontinental railroads were built all around the US and were used for trade and to transport goods all over the place
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