Look at the map showing the european union (eu) and countries with which it has free-trade agreements (ftas) which is the reason the eu has free-trade agreements with almost every country on the mediterranean sea?
having a sea border between an fta country and the eu is more secure than a land border

having a shoreline makes shipment by sea possible, which is less expensive than over land

the countries in north africa and the middle east are potential members of the european union

the countries in north africa and the middle east are less politically volatile than other countries

since there isn't any suggested answers i will give you the reason and hopefully you can figure it

south africa, or rather all of africa, has not been in the location in which it is nowadays throughout the geological past. after the super-continent pangaea started to break apart, gondwanaland, in which was africa, moved further south, and parts of it came to be very close to the south pole. because the climate in this part of the world is very cold due to the very dispersed sun rays in there, what is now south africa, started to freeze, and the conditions were right for the formation of glaciers. the glaciers existed up until the period when gondwanaland started to break apart and what is now africa started to move towards north, sp it warmed up and the glaciers melted.