Im guessing they were called "wagon trains". Apologies if i'm incorrect!
I think the answer to your question you ask is the letter b. the second to last.
Oklahoma became the 46th state in 1907, following several acts that incorporated more and more Indian tribal land into U.S. territory. After its inclusion in the union, Oklahoma became a center for oil production, with much of the state's early growth coming from that industry.
Answer:
personal record, business record
Explanation:
