Answer:A
Explanation:
I already took the test and got a 100
The answer to your question would be: on margin.
Hope i could help :)
I was just reading about this in my World History class!
First, we know that the Aztecs were the last of the pre-Columbian civilizations. And, we know they built several cities, their capital was Tenochtitlan. They settled on the islands of Lake Texcoco. They are most known for their chinampas, which was how they farmed! Since around them was all lakes and since they were farmers they built these things that were basically field built on top of the water! They were rooted by trees! These early Mesoamerican empires were known for their advanced technology!
Hope this helped!
Ps: Here's a picture from my school about this Mesoamerican empire!
Answer: The demonstration was crushed by Chinese military. Students in Beijing held protests around 1989 against a Chinese government which at Tiananmen Square led to violence and some students were killed.
I believe the answer is A, Pollution of the environment, hope this helps :)