In what century did the uprising of Spartacus take place? In the first or second half of the century?

The uprising of Spartacus took place in the first half of the 1st century BC in 73 and lasted for about two years (until 71 BC). It was the third in importance and the first in danger of the slave uprising in the territory of the Roman Republic. It was considered dangerous, since it happened directly on the Apennine Peninsula.
It began with a riot of 78 gladiators, but at its zenith it numbered about 120 thousand people. The main goal of Spartacus was to go north to the Alps and disperse there, but his partner Crixus wanted to go to Rome. The winner of Spartacus was Mark Licinius Crassus.