What finally broke the Athenian defense? PLEASE HELP

Greg goes to a high school and observes the way students talk to each other. he makes notes on the words used, the atmosphere of the school and the way the students present themselves to each other. this is an example of a( research method.

Census data is an example of: public information. private behavior. private information. public behavior.

What aspect of the roaring twenties do you think changed society