Andrew Jackson was the 7th president
He supported them because he wanted later to make a treaty with panama to construct the panama canal.
Tropical rainforest, the high mountains and wild rivers were some of the physical obstacles that the Incas faced. They had to build a complex network of roads to link the entire Inca empire. They had messenger stations along these roads so that they could relay their messages, and they built shelters along the way for travelers.
Answer:
I personally think some of the information can be biased based on who wrote it.
Explanation: