New evidence changed ideas about what caused the black death when a team of scientists visiting hong kong discovered thata bacterium caused the black death. a virus caused the black death. rabies caused the black death. tetanus caused the black death.

The correct answer is option a. "bacterium caused the Black Death" Yersinia pestis (also known as Bacillus pestis or Pasteurella pestis), is the patoghenic agent behind the plague of the Black Death. This disease was transmited to humans through the bite of infected rats. The bacteria was described and cultured by Alexandre Yersin in Hong Kong in 1894.

they were unable to pay their debts

the east coast has nothing to do with the dust bowl, the dust bowl killed a full year's worth of crops in seconds, and with the dust on the land, the land would be worthless.   furthermore the farmers couldn't  get  out of their houses due to the dust so when the bank came to collect money, farmers couldn't  pay it

c) many feel that their votes do not count eliminate