From where did portuguese traders buy enslaved africans in the mid-1400s?

The silk road

Explanation:

just to be sure what are the options?

because other regions has other things that egypt doesnt have.

consider an orange peel: if you want to try and lay it flat, you have to stretch it, we know exactly how things are being stretched or squashed at any given point. we have many different map projections because each has different patterns of some projections can even preserve certain features of the earth without