It could be because the area was of water that both sides
needed to supply their troops. Another
reason was when the Allies launched Operation Torch, it would enable them to
get hold of the Mediterranean so their ships could have a place to dock. It also would persuade the French to help the
Allies.
Umm give us some options to decide from?
Answer:
Great Britain had the most colonial territory.
I believe it was called greenbacks.