Which of the following statements best describes the Toltecs?

1. They built a major agricultural empire without developing substantial trade.

2. They developed a distinct culture that was unusual in that their cities and architecture did not borrow from other Mesoamerican cultures.

3. They rose to power rapidly because they filled the void left by the decline of the city of Teotihuacán.

4. They were a distinct ethnic group that moved into Mesoamerica from North America around 1000 CE.