Its Zygote theres your answer
Developments were made in irrigation, crop raising and breeding, building and handicrafts. Trade and commerce also flourished, and the Silk Routes became an increasingly important part of economic and cultural life, whilst coinage from this time serves as an indication of the political structure of the Kushan Empire
Answer:
13, unless there it more to it :)
The Cruscades. Without them, we wouldn't have slaughter of other religions.