Roosevelt had a specific goal with the Big Stick Diplomacy.
When Teddy says "Speak softly...and carry a big stick."
He talks about an unspoken threat of an extremely powerful military.
He would use this in MANY foreign policy situations, and it worked.
Hope this helps! :)
Pharaohs added more waterways and dam. They increased the amount of land being farmed and built canal between the Nile river and the Red sea.