given work permits from 1950 to 1979, and studies indicators of family migration, inactivity, duration of stay and return …

the laissez-faire solution in a pure market economy, and in one where reproductive decisions and intra-family transfers … are constrained by self-enforcing family constitutions. Section 5 introduces the state, and shows that first and second … rather than family level. Another type of model looks for voting equilibria in direct, and in representative democracies. …