People became Muslims because: (check all that apply)

B, and C. ( The beliefs were similar to Judaism and Christianity, and The Muslim Empire was successful. )

Explanation:

The Arabs never forced people to become Muslims, Arabs were also not a religion, so that is obsolete and incorrect. "It was the only religion in the Arabian Peninsula." This one is incorrect because Judaism, Christianly, and Paganism were all present there.

porter is writing economic history because he is focusing on the cost of developing vaccines.

china has confucianism thats everywhere in asia but it isn't really a religion.