What was one thing john smith did that make the colony of jamestown successful? he established a policy of discipline. he taught colonists how to plant crops. he wrote a constitution for jamestown. he began trading with the native americans.

He established policy of discipline, is the correct answer.

Explanation:

James Smith was a soldier and explorer from England. He established the Jamestown colony, which was the first English settlements in 17 the century in North America. He also mapped the Chesapeake Bay Area and New England. the first settlers were trained by him to work on the farm. He maintained a strict policy for discipline, One of his policies to govern the new territory was " He that will not work, shall not eat".

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.