It was beneficial to settlers because they got all this new land to settle on and harmful because they were being made to walk and were being killed on the way there and they were confined to small areas.... hope this helps
Besides geography, the major issue that would have made this impossible is that each "country" or state in South America was dominated by a different ruler, many of whom had fought of the Spanish--meaning that they would have never united under one title. Their cultures were also wildly different.
The difference is that the president is head of the executive branch and the legislative branch is the congress.
