Which crop did all of the ancient civilizations in the Americas grow?

Explain the difference between a plurality and a majority in terms of choosing a candidate for a primary

Bonus question: according to wikipedia, in chinese philosophy yin and yang "describes how seemingly opposite or contrary forces may actually be complementary, interconnected, and interdependent." what are some examples from the story that amy tan may have intentionally incorporated elements of yin and yang philosophy into this story? select 2.

John lennon and paul mccartney belonged to this group