What economic incentives were given to draw settlers to the west?

I believe the answer is: They gave the settlers low prices on better land, 6%, 10 Years credit

The low prices and credit attract many people who seek to change their luck because it provide a lot of opportunities to open new businesses and build new houses. Within 100 years of the announcement, the available land in settlement area was fully purchased.

the three answers (for plato at least) are:

b-condemned sola fida 

d-set rules for establishing seminaries and for educating clerics in the seminaries 

f-recommended moderation in the sale of indulgences and banned the sale of false indulgences