What is flag of ancient rome?

The flag of Ancient Rome is called the SPQR, which stands for "Senatus Populusque Romanus" meaning "The Senate and People of Rome". The SPQR was a symbol of the power and authority of the Roman Empire. It was a rectangular banner made of wool, and its background color was crimson red. The letters SPQR were printed in golden yellow in the center of the flag. The SPQR was used in various forms as the standard of the Roman Legions. It was also displayed in prominent places in Rome, such as the Senate House and the Temple of Jupiter Optimus Maximus. The SPQR symbolized the unity and strength of the Roman state, and it was used long after the fall of the Roman Empire as a symbol of Italian unity.