Ancient civilizations were primarily agricultural, and depended on the sun for life, and their crops. therefore, it is no surprise that they worshiped the Sun as a god.
The sun and flowers
Our ancestors observed that leaves and flowers of certain plants often turned to follow the movement of the sun in the sky during the course of a day. this plant, known as sunflower in English, was used in ancient times to worship the sun by certain civilizations of central and South America.