John brown tried to help enslaved people in kansas by

brown advocated the use of armed insurrection to overthrow the institution of slavery in the united states

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 : )

i think the answer is: cuba wanted to be independent from spain, and the u.s. wanted to end spanish rule in the west.

hope i

-lavira : )