Constantinople, Manchuria, East Turkestan, Mongolia, menacing Iran or Afghanistan, and a deal on the Sund tolls.
Some kind of Pan-Slavic solidarity mess in the Balkans.
So long as they're not in a position of using significant numbers of African slaves. Then it's a straight road to dehumanization town.
If they get in an enemy-of-my-enemy situation, say against the Ottomans, Portuguese or Dutch, they could instead view them positively.
Have Francis Galton's Chinese Africa proposal become official policy for some British colony in the late 19th century, and postulate it doesn't crash and burn. Crucially, they learn English under British administration and spend a generation "westernizing".
The resulting greater economic...
Gay rights movement negatively impacted. HIV played out just right with the political zeitgeist OTL for maximum boosting.
Herpes gets bigger, since there's no huge safe-sex campaign.
8: entry of Spain into the war requires the death, sidelining, or apprehension of Wilhelm Canaris. He was working for the British, and the Spanish practically telegraphed that he was the reason they didn't join the war.