use a word to replace the word advance in this sentence

题目

use a word to replace the word advance in this sentence
but the technological advances in transport have proved the biggest single fact promoting world travelpls do not change the meaning the sentence thank you!

答案

注意标点.
原句为：
But the technological advances in transport have proved the biggest single fact.
让选一个词替换advance而不改变原句的意思：
promoting, world, travel
很显然只有promoting为advance的近义词,意思为进步、提升
world意为世界.
travel意为旅行或经由.