Nationalism is very specific to the modern era. It didn't really exist before the French Revolution. So no.
Unless that was a typo and you mean to write "after the modern era"
Unless that was a typo and you mean to write "after the modern era"
Once more unto the breach, dear friends, once more, Or close the wall up with our English dead. Cry 'God for Harry, England, and Saint George! '
Res ipsa loquitor...