Economic prosperity often leads to improved living standards.

prosperity 是名词，来自形容词 prosperous（繁荣的、兴旺的）。词根 prosper 源自拉丁语，意为"成功、兴旺"。后缀 -ity 表示抽象名词，所以 prosperity 指"繁荣、兴旺的状态"。