Arectangular playground has a lengh of 75 yards and the width of 50 yards. what is the perimerter of th play ground

What are the strengths of the byzantine empire?

Did the both the us and ussr have atomic weapons after 1949

In a modern democracy all elected officials serve for a certain number of terms then must retire a high school sophomore and a senior citizen may vote at the polls together a united states senator votes on immigration law on behalf of your mother through indirect ballot all democracies have a two chamber system of representation united states citizens live in a direct democracy