Which contribution did george mason make to the u. s. constitution? a. he was the chief supporter of the bill of rights. b. he wrote several sections of the constitution. c. he proposed the compromise that saved the constitution. d. he led the group supporting ratification of the constitution.

Which of the following statements was true about lincoln's popularity at the time of the gettysburg address? a) he was just as popular as when he was elected. b) he was more popular with southerners than he had been at the beginning of the war. c) his popularity was very high. d) his popularity was very low.

Prior to the presence of europeans on the continent, the slave trade in africa a) did not exist in any form. b) was limited to internal trade only. c) included the trans-saharan and indian ocean slave trade. d) was rarely needed due to the lack of an agricultural economy.

Space is not completely empty. there are small particles in space. what happens when these particles come together?