When was the Itaipu dam built?
the Itaipu dam was built in February 1971 I DID MY RESEARCH
Dams are very expensive, so they aren't a very good idea in low economically developed countries (even though they are great help to prevent flooding). Remember also that prices vary depending on when they are built, how large they are, and many other factors. Some examples of building prices: Itaipu Dam: $20 billion Hoover Dam: $49 million Fontana Dam: $70 million Tarbela Dam: $25 million Three Gorges Dam: $$22.5 billion