What are the social, economic and polit​‌‍‍‍‌‍‌‍‍‍‌‌‌‍‌‌‌‌‌‌​ical impacts of migration on the sending and receiving countries?

P​‌‍‍‍‌‍‌‍‍‍‌‌‌‍‌‌‌‌‌‌​lease answer the following question:What are the social, economic and polit​‌‍‍‍‌‍‌‍‍‍‌‌‌‍‌‌‌‌‌‌​ical impacts of migration on the sending and receiving countries?Thank you​‌‍‍‍‌‍‌‍‍‍‌‌‌‍‌‌‌‌‌‌​!