Here are a pair of context clues worksheets, one on the noun confederate, and the other on the noun confederation. These are obviously key words for any instruction on the Civil War in the United States between 1861 and 1865.
It’s well worth mentioning that confederate also has use in English as an adjective and a verb. These words carry a strong Latin pedigree, the verb confoederatus, “to unite by league.” This word isn’t commonly used in English, or at least American English, perhaps because it carries the taint of the rebellion in the United States to protect the Southern planters’ prerogative to commodify human beings and hold them in servitude.
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