What doe winthrop mean "raise a bulwark against the non-believers" and why?

Raising a bulwark means building up a wall for protection against the people who do not follow and practice the religion of Christianity.

Explanation:

John Winthrop was the one who got firer wave of a huge number of immigrants to New England.

And he wanted to establish a pure church in the region of New England was not in the favour of separatism.

And wanted to change New England in a puritan society and wanted to help each other and treat each other well.

ok, so basically your gonna start with 350 ok. so there's 60 seconds in a minute so that means you he can go up 10 ft per minute. soo, after 3 minutes he should be at 260 ft after three minutes : )