PLEASE HELP! what are some of Cecilius Calvert's accomplishments

Calvert served in the House of Commons from 1609 to 1611. He was knighted in 1617, became a secretary of state in 1619, and was given a pension in 1620. Serving in the House of Commons from 1621, he had the tasks of communicating King James I's policy and of obtaining royal supplies.

Explanation:

the discoverers and explorers: 1. natives showed jedediah smith the way. 2. william sublette was the first cross it with a caravan. 3.joel walker and his family were the frist settlers to use it. the jumping off point: 1. founded in 1827 near where the missouri river flows into the mississippi. 2. by the 1840's, it was the most popular "jumping off" point for pioneers to stock their wagons with supplies. 3. missionaries from the church of jesus christ of latter day saints attempted to make independence their zion, or holy capital. the route west: 1. the first emigrants to oregon came by ship before the trail was established. 2. ships continued to to travel to oregon even after the overland migrations began, but they were not popular among the pioneers. 3. the fare for a sea journey to oregon was quite expensive--few pioneer families could afford it. i don't know the other three i'm sorry.

food chain i would say only because there is competition on getting food and survival