The invention of telegram-the transmission of messages to an

make后面 要是加it,就不能在加the transmission of messages
the transmission of messages和it只能有一个.两者区别就是it是形式宾语,只能紧跟在动词make后面,真正的宾语the transmission of messages位置没有这个限制
这句话还可以这么写 The invention of telegram made the transmission of messages possible to any part of the world within a few second 这样是不是更清楚一点,it是多余的