What new innovation did the Confederacy use to threaten the Union blockade of Southern ports?

The blockade of the South during the Civil War, as well as Southern attempts to circumvent it, signaled a new era in naval warfare. Steam ships being used in war was new enough, but the Union and Confederate governments began building ironclad ships for use in battle.

What do trees do for us?

One example is we breathe in oxygen and breathe out carbon dioxide. Trees, on the other hand, take in carbon dioxide and release oxygen into the atmosphere. ... In addition, trees support us by providing shade and shelter, preventing soil erosion, serving as wind breaks, cleaning the groundwater, and by providing food.

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