China to Build Morocco High-Speed Rail Line For $350 Million - Newsweek

For comparision, in Berlin Germany there is currently an unnecessary and deeply unpopular inner city highway extension being built. It costs about €300 million per kilometer.

It's easy when you only pay workers five dollars a day, work them like mules for twelve hours a day, are building in the open desert, don't need to do environmental impact surveys, and use cheap building materials and workmanship that starts to fall apart after ten years

Yes but fun fact, maximized corruption.