Is there a good website for me to find: The Maya's Reason for Decline, The Aztec's Location, Lauguage, Ruler/Type of Goverment, Religion/Beliefs/Society, Achievements, Reason for Decline & The Inca's Location, Lauguage, Ruler/Type of Goverment, Religion/Beliefs/Society, Achievements, Reason for Decline.

Please
All I need is a webiste for it.

No one website has all of this information.

You'll either need to read your book or Google each of these questions separately.

Three reason why the native American population decline when the Spanishmade contact with them

Sure! A great website to find information about the Maya, Aztec, and Inca civilizations is the "Ducksters" website (www.ducksters.com/history/aztec_maya_inca). This website provides straightforward and reliable information about various historical topics, including these ancient civilizations. It covers all the aspects you are looking for, such as the reason for decline, location, language, government, religion, society, achievements, and more. By visiting this website, you will find comprehensive and well-organized information about these three civilizations.