Leaving the safety of their trenches and attacking the enemy.
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.
The ability to walk upright and the development of the opposable thumb really signifies the shift from life in the trees to life on the ground. This is the main reason why it is important.
