Why were the early american civilizations more primitive than other earlier civilizations

The great compromise during the writing of the constitution involved

Which of the following created as part of president johnsons great was most directly aimed at breaking the cycle of poverty in the usa department of transportationb medicarec office of the consumer protectiond head start

Large igneous rock have been found on surface sedimentary bedrock in north carolina .which statement best xplains the presence of these boulders