Which answer correctly explains why most factories were located along the eastern coast? (5 points)

the first factories took over ship building areas.
shipping companies were the first to switch to factory building.
early factories needed sea water for processing raw materials.
sea ports facilitated shipping goods and receiving raw materials.

The correct option is "Sea ports facilitated shipping goods and receiving raw materials."

US Industrialization was facilitated by a unique confluence of geographic, social and economic factors. The post-American Revolution remained low relative to its European counterparts and the demand for labor created strong incentives to mechanize labor-intensive tasks. The East Coast of the United States, with a large number of rivers and streams along the Atlantic coast, including many potential sites for the construction of mills and the necessary infrastructure for scientific industrialization and early technology.

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.