In the 1920s, how did manufacturers make products faster and more cheaply? they reused old designs and models. they offered a smaller range of goods. they saved on costs by not advertising as much. they adopted henry ford’s manufacturing techniques

In the 1920s, manufacturers made products faster and more cheaply because they adopted Henry Ford's manufacturing techniques. Industrialization pioneer Henry Ford developed mass production techniques as the assembly line which reduced the production costs. Besides, Ford´s plants could manufacture hundreds of cars per day.

bujías y una hora antes y no me parece muy difícil

i see, would you mind putting it as one?