The borders of the Tang Dynasty expanded into

The Tang dynasty in Inner Asia was the expansion of the Tang dynasty's realm in Inner Asia in the 7th and, to a lesser degree, the 8th century AD, in the Tarim Basin, across the Gobi Desert and into Middle Asia.

Explanation:

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answer; i believe the correct answer is (a) the correlation between the cause variable and outcome variable is zero;

answer; the correct answer is (composition);