NapoleonXIV
Banned
WI around 900 AD a climactic anomaly occurs. Siberia becomes, over the next century, about 10 degrees warmer, or however much is necessary to make it correspond to present day Western Europe. This is the only change, everywhere else stays the same as in OTL. It stays that way until, in about 1800 it starts to change back, becoming as it always was by 1900.
What are the consequences?
What are the consequences?