Context: Human sacrifice in ancient Rome was rare but documented. After the Roman defeat at Cannae two Gauls and two Greeks were buried under the Forum Boarium, in a stone chamber "which had on a previous occasion [228 BC] also been polluted by human victims, a practice most repulsive to Roman feelings". Livy avoids the word "sacrifice" in connection with this bloodless human life-offering; Plutarch does not. The rite was apparently repeated in 113 BC, preparatory to an invasion of Gaul. Its religious dimensions and purpose remain uncertain.

Question: What type of sacrifice was rare in Rome?
Answer: Human

Question: What act was repulsive to Romans?
Answer: Human sacrifice

Question: How were sacrifices of humans carried out in Rome?
Answer: buried

Question: Before the invasion of what area was human sacrifice carried out?
Answer: Gaul

Question: When was the invasion of Gaul by Rome?
Answer: 113 BC