Answer:
im not entirely sure, but it i think it was the slash and burn. (it might not be a system though)
Explanation:
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The art of praying spread. hope this helps
Least common multiple (LCM) of 10 and 20 is 20.
You’re not gonna like my answer but-
Just study them. You can write a timeline of the battles or even find one online and keep reading it until you have it implanted in your memory.
Other than that, I dunno what to say
Good luck on that test!