5. How do historians evaluate evidence to determine if it is reliable? a. By recreating historical artifacts
b. By reading straightforward accounts
c. By asking questions like detectives would
d. By relying on personal experiences

new evidence is discovered.

oversights and errors are corrected,

new technology is applied to evidence.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)

immigrants from northern and western europe continued coming as they had for three centuries, but in decreasing numbers