1100 - The Aztecs leave their homeland of Aztlan in northern Mexico and begin their journey south. Over the next 225 years the Aztecs will move many times until they finally settle down at the city of Tenochtitlan.
1200 - The Aztecs arrive in the Valley of Mexico. 1250 - They settle in Chapultepec, but are forced to leave by the Culhuacan tribe.
1325 - The city of Tenochtitlan is founded. It will become the capital of the Aztec Empire. The location is picked by the priests because it is where they see the foretold sign of an eagle holding a snake while standing on a cactus.
1350 - The Aztecs begin to build causeways and canals around Tenochtitlan.
1375 - The first dominant ruler of the Aztecs, Acamapichtli, comes into power. They call their ruler the Tlatoani which means "speaker".
1427 - Itzcoatl becomes the fourth ruler of the Aztecs. He will found the Aztec Empire.
1428 - The Aztec Empire is formed with a triple alliance between the Aztecs, the Texcocans, and the Tacubans. The Aztecs defeat the Tepanecs.
1440 - Montezuma I becomes the fifth leader of the Aztecs. His rule will mark the height of the Aztec Empire.
1440 to 1469 - Montezuma I rules and greatly expands the empire.
1452 - The city of Tenochtitlan is damaged by a great flood. The next few years are filled with famine and starvation.
1487 - The Templo Mayor (Great Temple of Tenochtitlan) is finished. It is dedicated to the gods with thousands of human sacrifices.
Answer:
Modifications in social structure
Developments in technology and organization reshaped social structure. A recognizable peasantry continued to exist in western Europe, but it increasingly had to adapt to new methods. In many areas (most notably, the Netherlands and Denmark) a cooperative movement spread to allow peasants to market dairy goods and other specialties to the growing urban areas without abandoning individual landownership. Many peasants began to achieve new levels of education and to adopt innovations such as new crops, better seeds, and fertilizers; they also began to innovate politically, learning to press governments to protect their agricultural interests.
The primary way in which the Spanish and French differed in their treatment of American Indians was that the French formed alliances with some tribes while the Spanish were often very brutal in their treatment of them.
I'm almost certain the answer is more than 30%
