That reality is objective,
so each person's perception is one's own truth, reality is unique to each individual, each person perceives space and time differently, and people's perception is not necessarily true to everyone else.
Thus laws of physics are the same for all observers if they're accelerating or moving in space and time in uniform motion, if they're Not, the perception of these only relates to that object or observer accelerating. ("<em>Special relativity</em>")
Answer:
It provided a place for trade between the North and the South.
Explanation:
It provided a place for trade between the North and the South.
The expansion of the railroad system in the US made natural resources more available in the United States by making the transportation of such resources far easier and cheaper, since before the train was widely used for transportation the only other means to get the resources to factories was by steamboat or horse.
Medical Wars were armed clashes between the Achaean, Ionian, Dorian and Aeolian Greek peoples against the Persian Empire in the 5th century BC