they are similar because the Romas copied the greek gods but changed their names
Both religions were polytheistic (had many gods).
Greek religion influenced Roman religion starting from the early days of Roman history. In the 6th century BC the Romans started using the books of the Sibyls who were Greek oracles, some of whom lived in the mentioned Greek city of Cumae near Naples. They also adopted the Greek god Apollo, who was an oracular god (that is, he was the god of the oracles) and built the Temple of Apollo Medicus (the doctor) in in 431 BC. Apollo's son, who mediated Apollo's association with medicine and healing, was also adopted. The Senate was instructed to build a temple in his honour by the Sybils in 293 BC. The Romans also procured a statue of him from Greece. The Romans adopted the Greek twin gods Castor and Pollux and the mythology associated with them by the late 5th century. They turned Heracles, the Greek mythological hero (whom they called Hercules) into a god because he was said to have killed Cacus, a fire-breathing giant who was terrorising the Roman countryside. During the Second Punic War (218-202 BC) they 'imported' Cybele (whom they called Magna Mater, Great Mother) because Sibyls said that with this Rome could defeat Carthage. Besides adopting some Greek gods, at one point the Romans linked their gods to the Greek gods and their associated mythologies.
They both were polytheistic; that is, had many gods and goddesses and many cults associated with the various deities. They both were centered on offering sacrifices to honour the gods and to appease them.
They were both concerned with expanding their empires They both only allowed males to vote. They had very similar religions.
Catholic religion and Greek Christianity are somewhat similar, but other Greek religions are not similar to the Catholic religion.
They are not similar in any way.
The Romans based their gods on the Greek gods and only changed the names.
Polytheism. This means many gods, one for each aspect of life. They both had a high god - Romans had Jupiter (a development from Janus - Janus-pater, ie Janus the Father, later corrupted to Jupiter). Greeks had Zeus. The two religions recognised that their gods, even though they had different names, were the same, and gave them due respect. It was not until the advent of Judaism and its offshoots Christianity and Islam that religious differences became significant, claiming supremacy, and war and killings in the name of religion emerged.
Although the Romans worshipped many of the Greek gods, under Roman names, there were differences in the two religions. The Romans also had gods they inherited from their Etruscan neighbours, although by and large the Greek gods became more important. The Romans never really adopted the Greek belief in oracles. On the other hand, the Romans followed a form of shamanism and divination.
The Romans tolerated other religions as long as they were not what the Romans considered decadent or treasonous.
A 3-pronged fork, similar to the fork that the Devil has in other religions.
It's true. The Romans 'borrowed' many things from other cultures and religions, including Greek and Egyptian, and probably more. Most of the Roman gods, goddesses and heroes had Greek equivalents including:Jupiter -> ZeusNeptune -> PoseidonPluto-> HadesMinerva -> Athena
King Louis was from Rome and all the Romans were tolerant of other religions as long as their followers were respectful of the Roman religion.
The Romans respected other religions.
One of the Greek religions is Greek Orthodox, a form of christianity.