Answer:
B
Explanation: They were who made the Oregon Trail and the first people to make it easier to cross the U.S.
I believe it is A, That seems like the most reasonable
A. chronological order , this sequence go's from least important to most important
The answer to this question is : Only kings and their relatives could become royalty, while effective military leaders and politicians could become nobles
Q1, Is C...Q3,I'll say #3 or #4....The rest is hard sorry