YuriSmith
Generally speaking, globalization is a blend of cultures. Some people think that it’s a new process. In fact, globalization existed even during Middle Ages, when people decided to trade goods with merchants from distant countries. Since 1980, it has begun to move at a faster pace.
I don't see the logical connection between the second sentence and what follows. I'd change
In fact with something suggesting contrast such as
however. According to your definition, any kind of exchange between cultures counts as globalisation. This means that it'd go well beyond the Middle Ages. Plus, it's hard to say that, over the centuries, trade was a form of globalization, as only some societal groups could actually adopt practices from other cultures (mostly, rich and noble). The process, then, is more about a structural uniformation of cultural practices that, as you rightly say, spread at a faster pace in the second half of the 20th century.
Overall, it's a good essay, I'd just look for some minutiae that would render it even better.