What failed on Ferdinand de Lesseps´s plan was the choice to build the Panama Canal at sea level in order to evade the use of locks. The technical complications of working in the wet tropics doomed the project. Especially unfortunate were repeated landslides into the excavations from the near water saturated hills.
This mistake can be understood as De Lesseps was no engineer. His prior success on Suez Canal had laid solely in organizing the needed political and financial support and providing the technical support.
Hobbes defines contract as "the mutual transferring of right." In the state of nature, everyone has the right to everything - there are no limits to the right of natural liberty. The social contract is the agreement by which individuals mutually transfer their natural right.
The correct answers to this question are history, math, and foreign language. These are the three areas of learning the Sumerians excel. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.