For what reform is Justinian best remembered? A) He pioneered the use of blank checks
B) He encouraged his subjects to improve their social class
C) He compiled a legal code that served as a model for later users
D) He healed the schism between the Roman and Byzantine churches

Which of these would be most useful in studying the effect of germs exchanged between the new and old worlds? a. a graph showing the number of europeans between 1492 and 1600. b. a graph showing the number of native americans between 1492 and 1600. c. a primary source description of the symptoms of an unknown disease affecting native americans in 1492. o d. a primary source description of the symptoms of an unknown disease affecting europeans in 1492.