What is the largest african country crossed by the equator

no

explanation:

since the earth is flattened at the poles and bulges at the equator, geodesy represents the figure of the earth as an oblate spheroid. the oblate spheroid, or oblate ellipsoid, is an ellipsoid of revolution obtained by rotating an ellipse about its shorter axis.

answer; native americans who sometimes actively impeded railroad construction; physical obstacles like rivers and canyons, and