Are making, aka D bc it is correct
Just a simple thank you, if someone does something nice for you, keeping your elbows off the table at dinner, not eating loud and messy. these are most common ways of expressing good manners.
Answer:
California may have a hard time convincing residents to drink recycled wastewater.
Explanation:
It is not a technological one but it is a matter of persuasion.
Answer:
-he invented the electric telegraph that transmitted information instantaneously. -he developed the semaphore system, there by revolutionizing communications. -Telegraph wires spread across the continent by following railroad tracks west. -The first telegraph.
