Long ago, the Olmec lived in a warm land. 

Long ago, the Olmec lived in a warm land. 
They grew much food to eat. This helped their towns grow big. They built a very large pyramid. 
The Olmec people made beautiful art. They carved huge heads from stone. They also made small figures from clay.
They played a special ballgame. They used balls made of rubber. This was a new thing for them.
Later, the land changed. The rivers moved to new paths. This made it hard to farm. The Olmec people left their cities.
The Olmecs were an early group of people in Mexico. They lived in a land of rivers and swamps. This area is called the Gulf lowlands. 
Around 1200 BC, the Olmecs began to grow. They lived in a place called San Lorenzo. The rich soil helped them grow plenty of food. This allowed their towns to grow large. A group of leaders emerged in these towns. These leaders wanted fine things to show their power. They traded for jade and obsidian from far away. 
Later, the people moved to a new center called La Venta. They built a very large pyramid there. It was the biggest building in their world. 
By 400 BC, the Olmec cities were mostly empty. The land changed in big ways. Rivers moved to new paths. This made it hard to farm. Some think volcanoes also made them move. Even after they left, their ideas lived on in other groups.
The Olmecs were a major civilization in ancient Mesoamerica. They lived in the Gulf lowlands of Mexico. This area includes the modern states of Veracruz and Tabasco. 
Olmec life involved many interesting traditions. They are known for playing a ceremonial ballgame. They made balls using natural rubber from trees. To make the rubber, they mixed latex with vine juice. 

The Olmec civilization began a long time ago. Some evidence shows their roots go back to 1600 BC. Their first major center was called San Lorenzo Tenochtitlán. Around 900 BC, San Lorenzo began to decline. The people then moved to a new center called La Venta. 
Olmec people were great traders and artists. They got jade from the Motagua River valley in Guatemala. They also found obsidian in the Guatemala highlands and Puebla. 
By 400 BC, the Olmec cities were mostly abandoned. The population in the heartland dropped very quickly. Scientists are not sure why this happened. One idea is that the rivers changed their paths. This would make it hard to farm the land. 
The Olmecs were a major civilization during the formative period of Mesoamerica. They flourished in the Gulf lowlands of modern-day Mexico. This region includes the states of Veracruz and Tabasco. 
Olmec society grew from early farming cultures in the Tabasco region. These early groups lived there between 5100 BC and 4600 BC. They used similar crops and technologies as the later Olmecs. The civilization truly emerged in San Lorenzo Tenochtitlán around 1400 BC. The local ecology helped this growth happen. The area had well-watered alluvial soil and a large river basin. This environment provided plenty of food from farming and aquatic sources. 
Olmec leaders maintained power through extensive trading networks. They acquired precious materials from very distant locations. For example, they sourced jade from the Motagua River valley in Guatemala. They also obtained obsidian from the Guatemala highlands and Puebla. 
The civilization moved through distinct stages of development. The first major center was San Lorenzo Tenochtitlán. It was the heart of Olmec life until around 900 BC. Around the 950s BC, many San Lorenzo monuments were destroyed. Some researchers believe this was an internal uprising. Others suggest it was a ritual act involving the reburial of monuments. After San Lorenzo declined, the center of power shifted to La Venta. 
La Venta was a place of spectacular displays of wealth. The site featured a Great Pyramid that was the largest structure in Mesoamerica at the time. Deep underground, the Olmecs left massive offerings. These included 1000 tons of smooth serpentine blocks. They also buried large mosaic pavements and many votive offerings. These offerings consisted of polished jade celts, pottery, and hematite mirrors. These labor-intensive projects show how much power the La Venta elites held.
Olmec art is known for being both naturalistic and highly stylized. Artisans carved figures from clay, jade, and basalt. Some pieces, like "The Wrestler," show very realistic human forms. Other art depicts fantastic creatures with religious meanings. These often include motifs like downturned mouths and cleft heads. These features are associated with werejaguars, which are human-animal hybrids. 
The end of the Olmec civilization remains a mystery. By 400 BC, the major centers were abandoned. The population in the eastern heartland dropped very quickly. Scientists have several theories about why this happened. One theory is that serious environmental changes occurred. Rivers may have changed course, making farming and transport difficult. 
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