Answer:
3.29ft/mi
Explanation:
The gradient of a river is the slope through which a river flows. It measures the vertical drop in elevation of river to the horizontal distance.
Mathematically;
River gradient = 
Elevation = 1229ft
Horizontal distance = 373miles
River gradient = 
= 3.29ft/mi
the prime meridian is 0* longitute and the equator is 0* latitude.
A map, I think is the most important, the most basic map shows the physical features of an area, and compass, <span>used for </span>navigation<span> and orientation that shows direction relative to the </span><span>cardinal points...</span>
