<span>For several years the Angkor or Khmer Empire was the most powerful state on the mainland Southeast Asia. (in 800's) I believe that is your answer.</span>
Answer:
What is a perfect union?
A flawless union, one where all races join
higher ups mingle with lower class
no more single motions
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Explanation:
Invasive species of flora and fauna and communicable diseases were a byproduct of the Colombian Exchange
Answer:
The upper course, middle course, and lower course are the three parts of the river.
Explanation:
The source of a river can be found on the upper course. The land is usually high and mountainous, and the river has a steep gradient with fast-flowing water. There is a lot of weathering and erosion. The rivers are divided into three parts: the upper part, the central part, and the lower part. The upper part is closer to the source of a river. The earth is generally high and mountainous, and the river has a steep gradient with water flowing rapidly. There is a lot of vertical erosion and inflexible weather.