Read the excerpt from The Evolution of Useful Things. The laboratory in time made possible the research and development necessary to produce new and improved items in response to problems experienced by sandpaper users. Which phrase shows that one thing led to another?

the author is showing that it is the insatisfaction of basic needs that brings about the protests such as the strikes.if workers do not earn enough to buy food and feed their families and themselves in order to continue working, what is the use of working? besides, another message from the author is that of the owners of factories should be worried about ensuring their furure by having a second and third generation of workers in their industries.if they do not hear the workers demands, they will not have any more workers to make their pockets full.

it is important so later on in life they . can solve issues like that or other tough times in their life.. and also have info on those topics.

they can talk about topics like that by sitting the person down and talking with them.

explanation:

in my opinion, ap calculus was the most difficult. i often struggled with it a lot. however, i have gotten a lot better.