Document 3a

… His [Shi Huangdi’s] most significant reforms were to standardise Chinese script [writing],

weights and measures and even the length of cart axles so that every cart could run smoothly in

the ruts. An extensive new network of roads and canals improved trade and the movement of

troops between provinces.…

Source: “The Emperor with an ego big enough for all time,” Timesonline

Based on this document, what was one way Shi Huangdi’s actions helped China?