can anyone please answer these 5 before i scratch my brain out.i did the rest but these i couldn't get

What marked the beginning of agriculture in the Americas ?

A.Native people began raising goats.
B.The was invented.
C.Native people began growing maize.
D.The Spanish arrived.

2.Aztec aqueducts were an important accomplishment because they

A.prevented flooding.
B. collected rain water.
C.improved sewage systems.
D.carried water to the capital.

3.The Maya's use of astronomy was advanced because they used it

A.to predict horoscopes.
B.to develop accurate calendars.
C.to explain past events.
D.to choose names for their children.

4.The Olmec influenced later Native Americans mainly through

A.trade.
B.religion.
C.language.
D.art.

5. For what reason did Hernán Cortés most likely build Mexico City over top of Tenochtitlán?

A.He liked the location.
B.He wanted to prevent the Aztecs from farming.
C.He wanted to demonstrate Spanish superiority.
D.He did not want to spend time looking for another site.

1. http://en.wikipedia.org/wiki/History_of_agriculture#Mesoamerica

2.
http://en.wikipedia.org/wiki/Aqueduct_(water_supply)

3. B

4.
http://en.wikipedia.org/wiki/Olmec

5. A

To get the correct answers, you can use different methods like researching, consulting history books, or looking up reliable sources online. Here are the explanations for each question to help you find the correct answers:

1. What marked the beginning of agriculture in the Americas?
The correct answer is C. Native people began growing maize. To find this answer, you can research the history of agriculture in the Americas, specifically focusing on the cultivation of maize (also known as corn) by indigenous people.

2. Aztec aqueducts were an important accomplishment because they:
The correct answer is D. carried water to the capital. To find this answer, you can study the engineering and infrastructure of the Aztec civilization, specifically focusing on their aqueducts and their purpose in providing water to their capital city.

3. The Maya's use of astronomy was advanced because they used it:
The correct answer is B. to develop accurate calendars. To find this answer, you can learn about the Maya civilization's understanding of astronomy and how they utilized it to create complex and precise calendars.

4. The Olmec influenced later Native Americans mainly through:
The correct answer is D. art. To find this answer, you can study the influence of the Olmec civilization on later Native American cultures, focusing on their artistic style and iconography that carried on through the ages.

5. For what reason did Hernán Cortés most likely build Mexico City over top of Tenochtitlán?
The correct answer is C. He wanted to demonstrate Spanish superiority. To find this answer, you can study the motivations and actions of Hernán Cortés during his conquest of the Aztec Empire, focusing on how his decision to build Mexico City over Tenochtitlán was driven by a desire to assert Spanish dominance in the region.