To expand his empire, tang taizong primarily
a) relied on his military skills.
b) used his trade relationships
c) chose loyal friends as officials
d) won over the peasants in rural areas.

Tang Taizong, whose personal name was Li Shimin, was part of the Taizong dynasty, which ruled over China around the 7th century. Tang Taizong is also considered as one of the best emperors in the history of China because of his incredible achievements that brought prosperity and wealth to all China for more than a century after his dead. This period was seen as the Golden Age of China and the expansion of its territories was possible because Tang Taizong relied on his military skills (option a).

he sent troops to protect the students as they entered the school.

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.