As a rule, for any society that is single-mindedly interested in its own promotion and thus survival and preservation, it would have to have a huge population and it would have to send its people out, not letting too many others in.

      The European nation states send a lot of people out, but do not have huge populations, and let everyone in. The United States have a huge population, but send not enough out, and let everyone in. Japan has a big population, lets no one in, but sends few out. China, India and the Islamic world come very close to that ideal.