Which of the following is not an example of technological progress? an innovative method for organizing production that raises productivity

a new piece of machinery that allows goods to be produced more efficiently

new scientific knowledge that has practical applications

new roads and other infrastructure improvements built by the government

D

Explanation:

because it was not part of improvement because it was very primitive roads. And on that time Roads material were very less so.

I don't know this is right answer or No but I like to answer so ☺☺

- "the answers are a and b.  

when cullen speaks of planting while others reap, and standing "abject and mute," he is speaking about the racial injustices present in american society. as these injustices have changed over time, the american identity  has also shifted. those changes are, in turn, reflected in american literature."