Migrants impact institutional and cultural change of sending and receiving countries in many ways, both compositionally and through cultural transmission (from migrants to natives or vice-versa). The lecture will review the relevant literature within a unified theoretical framework. It will then discuss in depth frontier research in the economics of migration that aim at empirically identifying various channels of migration-driven institutional and cultural change, including "exit" (i.e., political selection into emigration), impacts of immigration on instituions of the host society, and political remittances. It will have a strong political economy and economic history content.