78．The railroad simultaneously stripped the landscape of the naturalresources，made velocityof transport and economy of scale necessary parts of industrial production，and carried consumer goods tohouseholds.

(and连接的并列句；strip…of…——剥夺…的…)

铁路同时剥夺了土地的自然资源，使运输速度和规模经济成为工业生产的必需部分，并将消费品送到各家各户。

解析：此长句为几个并列句

并列句1：The railroad simultaneouslystripped the landscape of the natural resources，

并列句2：made velocity of transport andeconomy of scale necessary parts of industrial production，

并列句3：carried consumer goods to households.

三个并列句用and相连，共同用一个主语railroad