When was the first boat built?
There are Aboriginal people in Australia. They have been there for around 50,000 years. Modern humans originated in Africa. The strait between Bali & Lombok has never had a land bridge (which explains the Wallace Line, incidentally). So Australian Aboriginals must have crossed a strip of water about 20 km wide, using something. So there is a good chance that the first boat was made on Bali in Indonesia about 50,000 years ago.
