The Tang military A. built its strength by developing an idea of ethnic militarism whereby only ethnic Chinese could participate in military service. B. relied principally on a large infantry, on its strength of manpower, rather than developing more expensive cavalry. C. relied on pastoral nomadic peoples, who were integrated into the army, to secure western regions of the empire. D. refused to follow the demands of political

B. relied principally on a large infantry, on its strength of manpower, rather than developing more expensive cavalry.

Explanation:

The tang military relied principally on a large infantry rather than developing more expensive cavalry because they use light infantry in order to feint the enemy and bring them into traps. The enemies comes after light infantry and when they were trapped, then the cavalry attack on the enemy and causes severe damage to them. These tactics were famous at that time so the tang army rely on light cavalry as compared to large cavalry.

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