What advancements in technology made the exploration era possible?

Physical features of central america look at the map above which of the following is true

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Afootpath is to be constructed in a park in the shape of a parallelogram. when a coordinate plane is laid over a map of the park, the vertices of the footpath are (-4,2) (8,2) (11,7) and (-1,7). what is the perimeter of this path