for example, in much of africa both feet and shoes have polluting qualities associated with them.

이 문장에서 왜 in much of를 썼나요 ?? in many of 쓰면 안되는건가요 ??
고1 모의고사 지문중에 있어서요 ... ㅜㅠ 답변 꼭 좀 부탁드립니다.