The appropriate choice for the non-event is ...
... A. The costs of sewing machines began to increase.
_____
Interchangeable parts generally reduce costs and increase demand (and production).
Answer:
B
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Answer:
Mercator Projection.
It is a map showing the shapes of the continents and landforms accurately but drastically distorting the size (area) of the continents.
Explanation:
Double headed arrows indicate positive or negative effects of one variable on another
