In this timeline, Egypt still conquers Sudan, but doesn't move into Arabia. As time goes on, it doesn't become a British territory. The Suez Canal is still constructed, but somehow, Egypt is able to avoid bankruptcy and takeover by Britain.
Aside from that, history goes on as normal. The Ottoman Empire still loses territory in Libya to Italy and in the Balkans. The Young Turks still take over the Empire. World War I comes around. Russia, France and Britain declare war on the Ottoman Empire after the Ottomans assault Russia's Black Sea ports.
How does World War I develop differently from here? Do the Ottomans successfully conquer the Suez Canal? Does trench warfare break out on the plains of Sudan?