B. it was in 1848, so that's before the civil war.
The correct answer is the following.
Match the following Maya, Aztec, and Inca inventions to the effects they produced.
Rope bridges - helped the Incas travel long distances and communicate with their neighbors.
The pyramid at Chichen Itza - helped the Maya view astronomical
phenomena such as eclipses with the naked eye.
Chinampas - helped the Aztec farm more productively.
Prehispanic civilizations such as the Aztecs, the Mayas, and the Incas were some of the most important and stronger civilizations in Mesoamerican times and South American times.
The Aztecs built impressive "chinampas," where they built their homes and grew crops in small portions of land in the water canals that connected the great capital city of the empire: Tenochtitlan.
The Mayas were great astronomers and built observatories in Chichen Itza, one of the most important cities in the Yucataán Peninsula.
The Incas were the dominant civilization in South America, they built Machu Pichu at the top of the Andes mountains.
Atlantic Ocean reason I just need the points so this might be wrong
Answer: Empire
Explanation: The answer is empire. Because an empire is a group of people or nations that rule a certain group.
Spanish explorers that came to the Americas after Columbus started a huge Spanish EMPIRE or a large group of countries under control by the Spanish kingdom, in the Americas.
***If you found my answer helpful, please give me the brainliest. :) ***
The first civilizations that we have knowledge of developed in the valleys of major rivers: the Nile (Egypt), the Tigris and the Euphrates (Mesopotamia), the Yellow River (China) and the Indus River (India).
These civilizations developed in the valleys of rivers because this environment provided them with various vital resources. A constant and reliable source of water was needed for the development of agriculture, which allowed them to sustain large populations. Agriculture also flourished due to the fertile soil that tends to surround river valleys. The rivers also worked as a highway, allowing them to develop trade and facilitating the exchange of information.
