Which statement best describes Pan-Arabism?

Pan-Arabism was the philosophy of the Ottoman Empire.

Pan-Arabism helped bring peace to Iran and Iraq.

Pan-Arabism was the political unification of Egypt and Syria.

Pan-Arabism is the belief that all Arab countries in North Africa and Southwest Asia should be unified.

Pan-Arabism is the belief that all Arab countries in North Africa and Southwest Asia should be unified.