China has made great efforts to develop trade and friendship[ ]countries?between or among?

China has made great efforts to develop trade and friendship[ ]countries?between or among?
China has made great efforts to develop trade and friendship[ ]countries?
between or among?

China has made great efforts to develop trade and friendship[ ]countries?between or among?
among

among三个以上国家

between

看上下文啊，如果是两个国家之间，就是between，如果是三个国家或以上的话，那就用among。

among