Which factor was a key reason that the greek city states had strong economies

What is it called when countries build lots of weapons to store and them in case of a war?

During the course of a raid, communication between swat team members suffered as excessive static overwhelmed radios. within the communication process, this static can be viewed as it interfered with the communication.

Sariah enters a room with several chirping crickets in it. upon first entering the room, sariah can hear the chirping; however, as she begins to talk to her friends, she is no longer aware of the chirping even though it is still there. the fact that sariah no longer perceives the chirping sound demonstrates sensory