I believe it is going to be " computer ".
It is an adjective modifying networks
1929 was when the great depression started
Answer:
c
Explanation:
This is a rhetorical question, meaning that the speaker is not looking for a yes or no, they are not looking for or expecting an answer. It is a statement or demand that has been expressed in the form of a question so the sentence does not need to end with a question mark.