What was called the severest of many plagues that took place between 1348 and 1350

A．Employees are in face of fierce competition.
B．Salaries of engineering grads are lower than the average.
C．Starting salaries have been increased this year.
D．There might be another hiring surge next year.

A．The strike has resulted in a great loss to the mining industry.
B．A few reporters were allowed to approach the mine.
C．Half the country’s black miners were on strike.
D．A white church leader called the strike action.