I'm not an economist, and don't know enough about it to have a sensible opinion. But it's pretty clear that "globalism" is not a new phenomenon.

• The Eastern spice trade spread ideas (and plagues) across all of Asia and Europe.
  
• The African salt trade supported travel across the Sahara even in the 15th century, and was associated with the slave trade.
  
• America was settled by Europeans, and there was considerable trade in goods, services, and workers between the continents.
  
• The British farming system collapsed in the late 1800s due to imported grain and meat from America and Australia.

I'm not sure what is so different today from how it's always been...