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Time is a bit long, ten years, when the total mileage of railway network plan also exceeded the plan, but only spent five or six years, although the construction of the difficulty a little better, but this plan was too conservative in ten years. can't change product key windows 7 professional,buy cheapest windows 7 home premium key uk   Maple Leaf at this answer, then smile. Shitaiyinsi smile: the time is somewhat conservative, mainly on account of poor east to the base, a lot of material on the American homeland will be shipped from the past, and transport is extremely difficult. can't change product key windows 7 professional,buy cheapest windows 7 home premium key uk   Second, the increase in labor costs, now as before, and now We have a lot of job opportunities, new immigrants are basically not worry about unemployment, in this case, it is difficult to attract enough workers to go in such a cold place to build a railroad. Maple Leaf smile: manpower should not have too many problems, and now we are not considering treatment three hundred ten thousand prisoners do, there are more than three million people, at least half of the labor force can solve it. But this plan, not only by rail, as well as the road network, smaller degree of difficulty .