Answer:
It is the world economy which we think of as being globalized. We mean that the whole of the world is increasingly behaving as though it were a part of a single market, with interdependent production, consuming similar goods, and responding to the same impulses.
There are areas where globalization is incomplete, even in the economic sphere. In particular, migration is very far from being free. Highly skilled professionals have a relatively high degree of mobility, but those without skills often face obstacles in migrating to higher-wage countries.