Not sure if i’m answering this question correctly but african slaves started being used because native americans were dying quickly due to disease
The main stems
of 38 rivers in the United States are at least 500 miles (800 km) long.
The main stem is "the primary downstream segment of a river, as
contrasted to its tributaries".[1] The United States Geological Survey (USGS) defines a main-stem segment by listing coordinates for its two end points, called the source and the mouth. Well-known rivers like the Atchafalaya,[2] Willamette,[3] and Susquehanna[4] are not included in this list because their main stems are shorter than 500 miles
Magma that is low in silicon produces a quiet volcanic eruption.
Answer:
Equator
Explanation:
Zero degrees latitude is a horizontal line that divides the Earth into two equal half or into two equal hemispheres.
<em>Hope this helps </em>
<em>:)</em>