Mesopotamia, located in modern-day Iraq, was known for its advanced irrigation systems, which allowed for the cultivation of crops in a dry and arid region.

Climate change, particularly a shift towards a drier climate, is believed to have been a major factor in the decline of the Indus Valley Civilization.

The Maya Civilization, located in Central America, practiced slash-and-burn agriculture, which involved clearing forests for farming, leading to deforestation and soil erosion.

Most ancient civilizations relied on human and animal labor as their primary source of energy, as fossil fuels and other modern energy sources were not yet available.

The Roman Empire was known for its extensive network of aqueducts, which transported water from distant sources to cities and towns.

Agricultural expansion, particularly the cultivation of olive trees, was a major cause of deforestation in the Mediterranean region during ancient times.

The Inca Civilization, located in South America, was known for its extensive system of terraced farming, which allowed for the cultivation of crops on steep mountain slopes.

Deforestation, particularly the overexploitation of trees for resources, is believed to have been a major factor in the decline of the Easter Island civilization.

The Persian Empire was known for its extensive system of underground water storage systems, called qanats, which transported water from distant sources to arid regions.

Climate change, particularly a shift towards a drier climate, is believed to have been the primary cause of the desertification of the Sahara Desert during ancient times.

The Persian Empire was known for its extensive system of windmills, called panemones, which were used for irrigation purposes.

Climate change, particularly a prolonged drought, is believed to have been a major factor in the decline of the Anasazi civilization in North America.

The Aztec Civilization in Mesoamerica was known for its extensive system of raised fields, called chinampas, which were used for agriculture in swampy areas.

Agricultural expansion, particularly the cultivation of crops such as maize and cassava, was a major cause of deforestation in the Amazon rainforest during ancient times.

The Chinese Civilization was known for its extensive systems of terraces and canals for irrigation, particularly in the Yellow River and Yangtze River regions.