Question: CF Industries Holdings, Inc. is a North American manufacturer and distributor of agricultural fertilizers, based in Deerfield, Illinois, for its first,of how many year, it was a federation of regional agricultural supply cooperatives, a co-operative federation or secondary co-operative is a co-operative in which all members are, in turn, co-operatives?
Sentence (from "CF Industries"): It was founded in 1946 as the Central Farmers Fertilizer Company.
Relevant evidence: No