Should I regard line 12 to line 15 as the topic sentence of the whole passage? The "religious significance" in that sentence is discussed in P2 and "method for maintaining permanent peace" is discussed in P3?
If so, how could I realize those things when the first time when I read it?
Actually when the first time I read it, I missed the TS and did not notice that the "loose bead -> string wampum -> wampum belt" were evolution. I simply regarded that they were merely different types of wampum. I think such misunderstanding negatively affected both my speed and accuracy. I did not realize the TS and the evolution thing until the third time I reviewed this passage~~~~(>_<)~~~~