参考答案

正确答案：B
解析：事实细节题。根据文章第二段后两句话“the land came so cheap because much of it was part of a federal subsidy originally allotted to the railroad companies…These federal giveaways were the original source of most major western logging companies’land，and when…logging companies moved…，federal lands trickled down to a few early settlers…inexpensively我们知道祖父家得到的土地原来是属于铁路公司的，而公司则是从联邦政府那里作为资助获得的。