Definition: This is the origin of May Day. It began on May 1, 1886 with a strike by a local Chicago labor union that ended in a police force wounding several and killing two.
Term: Haymarket Affair is the answer

1. where does the energy of a nuclear power plant come from?

d) political bosses should not hold office

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939

it reintroduced the two-party system.