Yabla video uses of 洪流

dàn
为什么 wèishénme
历史 lìshǐ
最终 zuìzhōng
què
shì
jiāng
西方 xīfāng
de
洪流 hóngliú
导向 dǎoxiàng
le
东方 dōngfāng
ne
but why in history did Western ideals ultimately overcome those of the East?