Question

To expand his empire, Tang Taizong primarily

relied on his military skills.
used his trade relationships.
chose loyal friends as officials.
won over the peasants in rural areas.

Answer 1

relied on his military skills.

Tang Taizong (Emperor Taizong of Tang) secured and enlarged the Tang empire largely through successful military campaigns and strong military leadership, defeating rivals like the Eastern Turks and expanding Tang influence into Central Asia.