This historian would be using the skill of "comparative analysis," since he or she is comparing a wide variety of sources to draw a conclusion between them as a group.
Answer:
either b or c
Explanation:
Named for its rich soils, the Fertile Crescent, often called the “cradle of civilization,” is found in the Middle East. Because of this region's relatively abundant access to water, the earliest civilizations were established in the Fertile Crescent, including the Sumerians.Apr 25, 2019
Johannes Kepler Discovered three laws of planetary motion.
