Questions: According to the map, which of the following formed part of the new border between the United States and Mexico? The Pacific Ocean The Rio Grande/Rio del Norte The 36th parallel

The answer is The Rio Grande/Rio del Norte.

The Pacific Ocean does not form part of the border between the United States and Mexico. It is a large body of water that lies to the west of both countries, but it does not serve as a boundary between them.

The Rio Grande, also known as the Rio del Norte, forms a significant part of the border between the United States and Mexico. This river runs from Colorado in the United States, through New Mexico, and along the border of Texas and Mexico, making it a key geographical feature in defining the boundary between the two nations.

The 36th parallel is a line of latitude that does not correspond to the border between the United States and Mexico. It is not relevant to the demarcation of the boundary between these two countries.