Based on the map, what best explains the growing popularity of coffee in china? a. the control of chinese ports by european colonial powers in the 1800s b. the chinese economy opening to trade with the united states c. the diffusion of culture eastward from western asia along the silk road d. the location of china close to major coffee-growing countries

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.