Discuss three important achievements of the ancient Maya. Write your answer in short sentences.
1. The Maya developed a sophisticated writing system known as hieroglyphics, which allowed them to record important historical events, religious practices, and astronomical observations.
2. The Maya were skilled mathematicians and astronomers, creating a complex calendar system that accurately predicted eclipses and other celestial events. They also invented the concept of zero and made significant advancements in geometry.
3. The Maya built impressive cities and architectural structures, such as temples, palaces, and observatories, which showcased their advanced engineering and artistic abilities. Their cities were designed with intricate urban planning and impressive irrigation systems.