Today on Uncommon Knowledge, historian Andrew Roberts considers why the Second World War took place and how it is remains relevant today.

โ€œWhere we went wrong with Versailles was in not splitting up Germany. The reason that we had Germany so peaceful from 1945 โ€“ and it has become a completely pacifistic country โ€“ is that it was divided. I mean Germany in 1815 was 365 states. And a wonderful place it was, too. From the moment that they actually became one state, once Prussia had established itself in the mid-18th century, it went to war with Denmark, with Austria, with France, and with us twice. So actually, if anything the Versailles Treaty wasnโ€™t hard enough.โ€

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