Which group of people shared the characteristics described in this text? the olmec also invented a calender and they carved hieroglyphic writing into stone

The Olmec was the first Mesoamerican Civilization, therefore they were ancestors of the Mayans

Explanation:

The Olmec are known as innovators and inventors. Their influenced spread not only to the Mayans but also to other civilizations in Mesoamerica. Some of their inventions include a writing system, the calendar and number zero. Archaeologists have found proof of the Long Count Calendar along with the concept of Zero were used years before the Maya was a functioning civilization. Further inventions and concepts attributed to the Olmecs that other civilizations used are the ballgame, religions and human sacrifice, popcorn and compass.

observing traffic laws in exchange for driving on the highway.

after the roman empire, the catholic church began to unify by taking on many duties of a government.