Priests performed rituals in Rome. There were several priesthoods, each tending to specific gods and officiating specific rituals.
The Romans prayed in conjunction with the offering of sacrifices to the Gods. These rituals were performed at the temple of the god or gods they wanted to appeal to.
yes
The legionary commander always took the omens before a battle. (They were somehow always good). Then the commander would give the men a "pep talk" telling them how good they were and how weak the enemy was. Individual soldiers may have had personal rituals they performed before assembly.
The Greeks performed rituals.
priests
Greeks sought their gods' favor.
They sometimes performed human sacrifice
Certain rituals have been performed for thousands of years and have acquired a lot of meaning. Rituals can evoke spiritual/mental/emotional states which can include memories.
The festivals and rituals were part of the religious beliefs of the ancient Romans. If some god/goddess were credited with a favor or a benefit to the city, they were honored with a festival and certain rituals whose purpose was to insure the god's continuing favor.
It means followers who protest against the religious rituals performed differently as mentioned in The Bible (New Testment)
The Etruscans assisted Romans in developing their writing system, many of their traditions and rituals, building and urbanization
The rituals of hajj are mainly be performed in Makkah (or Mecca) and its vicinity area. For details of these rituals you may refer to links below.