求翻译：公路时代的到来。公路是由私有关卡大道发展而来的。铁路的发展的主要动因在西部，因为运输能力的不足，是农场主无法将有利可图的的农场品运出。1806年，国会授权修建一条从坎伯兰到伊利诺斯州的公路。1811年开建，1818年完成。尽管质量差，但是大大的减少了运输时间，节省了运费。同时，公路两旁设立了一些畜栏客栈等。公路的修建首先推动了西部畜牧业的发展，似的新鲜的肉制品运到了东部。是什么意思？

Road era. The road from the development by the private crossing Avenue. The main action of the railway development in the west, because of lack of transport capacity, the farmer can not be profitable farm products shipped out. 1806, Congress authorized the construction of a road from Cumberland to I

Road era. By road, private road crossing development. The development of railway in the main manual for the west, because capacity is insufficient, the owner of the farm will be profitable to the farm. In 1806 Congress authorized the construction of Cumberland from the Illinois Road. Built on 1811,

Highway coming of age. Road was a private crossing road development. The main causes of the development of the railway in the West, because of insufficient transport capacity, is the farmer's lucrative farm products cannot be shipped. In 1806, from Cumberland to Congress authorized construction of a