What were the physical obstacles, political issues, and economic factors involved in building a network of roads, canals, and railroads in the northeast?

Physical obstacles:

Rivers were hard to find, so canals had to be built.

The mountains were hard to cross, so railroads had to be built.

Economic Factors:

The need for cheap ways to deliver goods far away pushed the creation of roads, canals, and railroads such as the National Road. These endeavors costed money.

Political Issues:

President Monroe deemed unconstitutional and vetoed a bill that would have granted money for the states to build roads.

John C. Calhoun and Henry Clay defended the need for new roads and other methods of transportation.

im not sure its either a leader of a group of congresspeople or a person from a congressmans district

sorry im not sure

i believe the answer is d.