Clifford Sifton, Ottawa's Minister of the Interior (1896–1905), argued that the free western lands were ideal for growing wheat and would attract large numbers of hard-working farmers. He removed obstacles that included control of the lands by companies or organizations that did little to encourage settlement. Land companies, the Hudson's Bay Company, and school lands all accounted for large tracts of excellent property. The railways kept closed even larger tracts because they were reluctant to take legal title to the even-numbered lands they were due, thus blocking the sale of odd-numbered tracts. With the goal of maximizing immigration from Britain, eastern Canada and the US, Sifton broke the legal log jam, and set up aggressive advertising campaigns in the U.S. and Europe, with a host of agents promoting the Canadian West. He would also broker deals with ethnic groups who wanted large tracts for homogeneous settlement.