Which statement accurately describes the tang dynasty?

a. it oversaw a prosperous golden age for china.

b. it was destroyed by the sui dynasty.

c. it pillaged large areas of central asia.

d. it was founded by genghis khan's grandsons.

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To encourage railroad companies to build railroads across the west, the government gave them subsidies by select the best answer from the choices provided. a. paying the wages of laborers b. giving them building materials c. providing railroad trains d. providing free land