[muawiyah]

Credit Moblier paid for bridges built by Chinese.

Ever read about the building of the first Transcontinental Railroad?

[moshiach]

Yes I also read a good number of those workers were hooked on opium. Frankly through no fault of their own, they were sent here hooked by their colonial masters. Google opium wars.

I think a better example is the Hoover Dam. It is not a perfect example but it relates better imho.