What were the social pressures that contributed to English colonization in North America

The social pressures that contributed to English colonization of north America had to do with religious, politics and economics matters. Bearing in mind that religion was the main factor contributing to the English migration, the Puritans fled to America from England to gain their religious freedom.

what are local authorities doing to fix the problem

explanation:

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain