Ý trong bài: Conflicts worsen when a natural resource crosses political boundaries.
When do conflicts decline?
Xuất bản: 21/08/2020 - Cập nhật: 21/08/2020 - Tác giả: Chu Huyền
Câu Hỏi:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.