It is both a and b.........
An agent was sent<span> by </span>U.S. President<span> Andrew Jackson to </span>find out if<span> the struggling new nation of </span>Texas could maintain its independence<span>.</span>
B. rebuilding the Cherokee Nation in the West
Within the Cherokee Nation, the Treaty Party, led by Major Ridge and his son John, favored rebuilding the Cherokee Nation in the West.
From what I have researched online, I found that there were around 562 tribes at the time of european arrival.