Panama: How a country of chaos became a bridge across the Americas
https://edition.cnn.com/travel/article/panama-bridge-across-americas/index.html
The initial reason why Panama Canal was planned seems that Spain was trying to find shorter way to Peru, which was colonized by Spain,
though I had thought that the main reason would be lowering transporting freight cost.
So, the history of Panama canal can be tracked back to Age of Discovery.
