Use the map to answer the following question:

Political map of North and South America, showing Aztec, Maya, and Inca civilizations. Aztec civilization is shaded in pink in mid Mexico, spanning from the east to west coasts, bordered by the Pacific Ocean and the Gulf of Mexico. The Maya civilization is shaded in purple, just south of the Aztec area, with coastline on the Pacific Ocean, the Gulf of Mexico, and the Caribbean Sea on the Yucatan peninsula. The Inca civilization is on the west coast of South America, spanning a large area along the coast of the Pacific Ocean. The Olmec civilization is smaller, noted in blue, and sits at the southwest tip of the Gulf of Mexico, between the Aztecs and the Mayas.
© 2012 The Exploration Company

Which of these questions can be answered with the information in the map?

Which civilizations were likely to trade and share culture with the Aztecs?
What geographic feature marked the eastern edge of the Inca Empire?
What were the populations of the Maya and Inca civilizations?
Which civilization included the city of Tiwanaku?