I still reckon that the Age of Enlightenment / Age of Reason had more impact for the better than religion ever did. Christians may have had the advantage of the New Testament and its "Gospel of Peace", but it did not always do them a lot of good.
The irony of this was not missed on "Heathens"; a parody of the hymn "Onward Christain Soldiers" reads as follows:
Onward Christian soldiers, into Heathen lands,
Prayer books in your pockets, rifles in your hands.
Bring the happy tidings, where trade might be done.
Spread the Peaceful Gospel, with your Maxim Gun.
Firearms buffs will recognise the Maxim Gun as the world's first automatically firing machine gun. During the late 19th and early 20th Centuries, it was the Weapon of Mass Destruction, and the Eurpoean colonial powers made widespread use of it to "pacify" the "savages" of Asia and Africa.