Explanation: During the final Siege of Constantinople (now Istanbul), the Ottoman Turks brought a large number of a then-cutting edge technology - cannons, including one of the largest cannons ever made!

Hokey old stone walls were no match for a good cannon by your side, and the defenses of Constantinople fell for the last time, and the Byzantine Empire with it.

I like this post and approve of the meme. That said the canons themselves did not win the siege. The fact that they could bring such huge ordinance shows just how many resources the Ottomans brought to bear.

Yes, Urban. Kaboom.