I am pretty sure that it is the legislative branch.
The Panama Canal is so important to the US for trade. It greatly decreased the amount of time it took to travel between the Pacific Ocean and the Atlantic Ocean, thus causing an increase in commerce.
The election for President is really 51 individual elections, one for each state plus DC. The USA is a republic, not a democracy. Each state gets a specific number of electoral votes total to the number of Reps and Senators that state has. All but 2 states have a winner-take-all system.
I believe this was the Republic of Turkey.