Louis Pasteur is the inventor.
A.
But technically, the U.S.'s largest trading partner is the European nations, with 270k exports, compared to Canada's exports - 310k.
Answer:
Option: It reduced the amount of excavation required to build the canal.
Explanation:
By creating Gatun Lake during the construction of the Panama Canal reduced the excavation time and money because it provided a water passage, between the Atlantic Ocean and the Pacific Ocean. The canal permits ships from both sides to enter and reduces the time of journey. Gatun Lake is an artificial lake one of the largest in its time when it was built.
I think we have two different holidays for them because they honor 2 different events in history .