The Saints Cyril and Methodius of the Byzantine Empire<span> are </span>remembered for<span> their missionary work. The correct answer is C, missionary work.
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I am pretty sure it's D. A market that has only one seller of a product and the seller can influence the price of the product.
If this is wrong, please tell me.
Hope this helps you! :)
The battle of Lexington and Concord
It was the CSS Virginia that was the Confederacy's first ironclad vessel, built on the hull of the Union ship, USS Merrimack, although it turned out to not be terribly useful in wartime.
It was successful because it allowed the protection of the United States against anyone who threaten or possessed weapons that could be used against the US.