To be necessary for us the compasses to draw a circle. Note the middle where put compasses a point, it still to be necessary for us. Foresee an axis — a diagonal straight line.
Further draw fixture of an axis and we take compasses, we put in noted point, we expose radius a little more and we draw a semicircle, then we do even more than a radius, we draw.
Then we draw a support and a silhouette of the continent of Eurasia.
Then Africa and island of Madagascar. By the way you can look how to draw Gia from mf "Madagascar" and if interestingly African decline.
Here ready drawing of the globe.