Where were factories built in the northeast throughout the 1800's a. near the atlantic ocean b. at waterfalls along rivers c. on open farmland d. in the appalachian mountains

Im thinking it could be B

modern sasaram city covers the largest sub-metropolitan area of bihar. it has many famous religious and historical spots and is surrounded by the scenic kaimur mountain range and rivers like sone and kav. sasaram city is situated in the middle of many industries.

explanation:

b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.