How many people in the Union army civil war?

The Union Army during the Civil War reached a peak strength of approximately 2,000,000 men. This number includes both volunteers and draftees. Of the 2 million who served, approximately 360,000 died, of which 620,000 died of disease, while the rest were killed in action or died of other causes.

Why were pollution and sewage a problem in American cities the late 1800s?

What was Lincoln willing to do save the Union?

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