Explanation:
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The reason that led to the rise of the domestic slave trade was the regional specialization in labor production. The South had a much higher demand of slaves for the labor-intensive cotton plantations. This demand for labor pushed up the prices of the slaves, intensifying the trade.
When citizens cast their ballots for president in the popular vote, they elect a slate of electors. Electors then cast the votes that decide who becomes president of the United States. Usually, electoral votes align with the popular vote in an election.
They are examples of Thematic Maps.
Answer:
Three-fifths 
Explanation:
This question is mathematics not history; however, the solution is as follows.
Given
Line Segments A'B' and AB
Center of Dilation = P


Required
Scale factor of dilation;
The scale factor of dilation is defined as thus;
Scale Factor is the ration of the distance between the center points and origin of the dilated line segment to the original line segment;
In other words;

Substitute
and 

Hence, the scale factor of this dilation is Three-fifths or 