I think the last option might be right too
One reason the United States emerged from World War II a clear world power was that "<span>The United States suffered fewer casualties during the war," since the US had been protected from the conflict by the Pacific and Atlantic oceans. </span>
<span>A) Nationalism prevented the countries from uniting </span>
Throughout the Arab region, a strong nationalist sentiment opposed
foreign control. This led to emergence of nationalist organizations as the
National Party in Egypt, the Young Ottomans and then the Young Turks in the
Ottoman Empire. Different nationalist groups had different ideas of the future
of their countries and about how national communities ought to be formed.
