The destruction that resulted from war or siege including the purposeful burning of an enemy city’s fields.
The crusades introduced Europe to the works of Middle Eastern scholars, philosophers, and doctors. Richard the Lion-heart, King of England and one of the most famous Crusader Kings, had an Arab physician.<span />
There are two interpretations of this:
1) It was a "gift" to Ukraine, marking the amicable relations between Ukraine and the Soviet Union, to bring them even closer
2) It made the Ukrainian Soviet Socialist Republic more ethnically Russian; which would shift the dynamics in it and tie it even closer to Soviet Union (And for example make it less likely that it would try to split )