Without more context, the phrase "sure enough" should not be used in either 1 or 2. Both sentences are okay without it. The phrase "sure enough" is usually used only in casual speech and not in academic history writing like in the two sentences.
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Without more context, the phrase "sure enough" should not be used in either 1 or 2. Both sentences are okay without it. The phrase "sure enough" is usually used only in casual speech and not in academic history writing like in the two sentences.