Question

Many members of the english gentry became willing to emigrate to the american colonies after

Answer 1

Many members of the English gentry became willing to emigrate to the American colonies after the break with the Catholic church kept younger sons from having secure futures within the Church.
In the past, they knew their sons' future was set within the church, but after there were major changes in religion in England, they were not so sure anymore, and thus decided to move to America.