Describe major innovation, advancements, achievements or cultural practices of this civilization. for maya and the roman empire 3-4 sentences.

The Mayas and the Roman Empire invented a calendar, they were so advanced in astronomy. On the other hand, both had their own systems to write: Mayas had hieroglyphs and the Roman Empire Latin. Finally, both cultures were polytheistic, which means that believed in many Gods.

i think its toxic gasses but i could be wrong

it is a better alternative