"Religion in public space is why there were non stop wars in Europe from the 16th to the 20 centuries."

Nope. 

The Swedish-Norwegian War of the early 1800s had nothing to do with religion in public spaces.

Nor did Hitler's invasion of Poland.

Nor did Napoleon's coup and his subsequent massive attack against Austrian forces, the start of the Napoleonic Wars.

Nor did Britain's initiation of the Anglo-Dutch War of the mid-1600s, which was about competition over trade routes and trade profits.

Most wars are about seizing territory and gaining riches, as was the case of the (atheist) Soviet Union's various military invasions of the 1900s.

But thanks for playing.