Surely it’s “until” not “unless”. We’re going extinct at some point, even if we make it all the way to the heat death of the universe.
it absolutely has. as you indicated in your follow up question.
for their time periods, many times throughout history we’ve had their version of globalization.
globalization is the natural state of society. obstacles are put in the way for various reasons; power, fear, etc… but it’s artificial roadblocks that temporarily stop it.
we trade with other humans. it’s pretty normal. it’s far more abnormal for someone to say, “you’re not allowed to trade stuff with Jim because he lives on the wrong side of that tree over there.”
Globalisation as we know it requires massive amount of military effort, diplomacy, and international law to be kept alive. In the past trade was taxed to death and was limited to luxury goods only. You could only trade in small volumes to limit the risk of theft. So all essential goods had to be made in your own territory.
I also think that this is the big difference between (classical) trade and (modern) globalisation. Trade has existed since ancient times, but globalisation, where a large fraction of a nation’s essential goods are from foreign countries, is very recent and artificial.