Answer:
Mastabas
Explanation:
The earliest burial places of the Old Kingdom Egyptian called Mastabas. Mastabas were constructed in a flat-topped one-story building in a rectangular shape with sloping sides as a burial ground for the royalty. These burial structures were built with mud bricks and later with stones. The structure constructed with an underground burial chamber along with storage chambers to stock materials and food for the afterlife.
This document tells me that during the early 1800s, United States was not controlled by one president. There were some places, such as west of the river Mississippi, that were not included in any state or organized territory of United States. Also, during the early 1800s, the life in the United States were distinguished from every other. They did not use the same law or judgment. They did not have the same life style or share the same culture.
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I believe it’s called Graded exposure therapy but I’m not sure