What colture had the knowledge of iron tools in africa ?

a. arabs
b. bantu
c. europeans
d. nubians

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.

The zealots and sages, like ben zaccai, opposed the romans in different ways. describe the differences.

The economic crash that began in 1929 was called the great recession, great depression, great slump, great revolution