Answer:
The answer is: 8 and 10 weeks.
Step-by-step explanation:
William Becknell left Franklin, Missouri, in September 1821 with a small group of men and a cargo of goods and arrived in Santa Fe on November 16.
For most people, it took 8-10 weeks to travel by train from Missouri to Santa Fe, New Mexico.
The answer is: 8 and 10 weeks.