What was the primary reason for Dawson being described as "the most tragedy-ridden camp"?
a. The education system in Dawson was prejudiced towards Native Americans.
b. Mine explosions, fire, flu, and loss of young men to war all contributed to the high death toll found in Dawson.
c. Miners and their families were only permitted to remain in Dawson for one year in order to provide mining opportunities to new settlers.
d. This expression was not used to describe Dawson or its conditions.