Compare the emergence of advanced civilizations in Meso and South America with the four early river valley civilizations. The calendars produced by both the Mayan and ancient Mesopotamian civilizations NEED ASAP WILL GIVE BRAINLIEST

a. were both accurate

b. are still used today

c. were based on the moon's cycles

d. never worked correctly

Which of the following was a goal of european conservatives in the early 1800s? a. the establishment of a homeland for people with a common heritage b. the expansion of suffrage to the middle class c. the constitutional protection of natural rights d. the preservation of traditional ways of life

Which of the following statements best describes the importance of the battle of guadalcanal

Which of the following describes an effect of world war ll on the united states economy a. automobile companies produced a record number of cars b. many factories had to expand to produce military equipment c. the airplane industry suffered as the allies began using airplanes in combat d.cities with shipyards declined because so many ships had been sent overseas.