What was the primary agricultural challenge the Aztecs solved by building chinampas in Lake Texcoco?

A lack of arable land on their island capital

Poor soil quality on the surrounding mainland

Constant raids from neighboring tribes on their farms

The inability to grow maize in a high-altitude climate

The Aztec capital city of Tenochtitlán was uniquely situated in what geographic location?

Along the coast of the Pacific Ocean

By carving terraces into the sides of nearby hills and mountains

By weaving reed mats, piling them with mud, and anchoring them in the lake

By clearing and burning sections of the mainland rainforest for ash fertilizer

By digging extensive irrigation canals from the central river to desert areas

To bring fresh water into the city

To remove waste and sewage from the city center

To irrigate the chinampas during the dry season

To provide a route for canoes to travel through the city

Their primary focus on religious and ceremonial structures above all else

Their advanced knowledge of engineering and sophisticated urban planning

A social structure that relied entirely on slave labor for all public works projects

A political system that was heavily influenced by ancient Roman architectural principles