Prior the development of interchangeable parts, A: the french led the world in the Industrial Revolution.

B: parts used to manufacture goods were custom made.

C: most parts were made in American factories in the South.

D: harvesting and other agricultural work was all done by hand.

help plz. :)

B: parts used to manufacture goods were custom made.

Explanation:

The use of factories and assembly lines made interchangeable parts more efficient to produce and use, before this, parts were custom made - which was more time consuming and less efficient.

i’m   sure probably just geuss and see which one you can get right, i’m pretty sure it is the combination of goods and services

you should think about the answers you give and expect the same form your questions.