model, where the UK can commit to mobility, and the EU may constrain trade to dissuade future secession, or to punish the UK …. The model highlights the importance of whether the EU views trade and labor mobility as substitutes, in line with standard … trade theory, or as complements, as suggested by EU statements about inseparable freedoms. In the former case, the UK can …

to which family size and birth order affect a child's subsequent educational attainment. Theory suggests a trade off …