I don't think colonialism is likely to expand with a 1914 POD, sans the Ottoman partition (which doesn't happen TTL); the British Empire was stretched pretty far as is, and the absence of fascism (eg in Italy) means none of the nations of Europe will be gambling their existence on further wars of aggression. As to China, they've still undergone revolution in 1911; and without the Japanese invasion of Tsiango, the two nations actually have a shot a cooperating to curb European influence in Asia, rather than the latter attempting to seize economic control of the former.
Now that said, TTL will also likely see the empires more stable than OTL; since you mentioned Persia, we could say, as an exams, that the 1921 anti-British Pahlavi Coup might not happen TTL.