Question

what is grid? how does it help locate places on the globe

Answer 1

Because the ‘grid’ is a known series of lines, longtitude and latitude that precisely indicate where a specific spot is located on the earth. All places along the 49th parallel are the same distance from the equator, and if you give the east west reference you know exactly where that place is on the globe....

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Answer 2

Grid is a line like a longitude and latitude in earth