Warren Grain & Seed Co. (Warren), an agricultural company that operated a grain elevator, contracted with several local farmers (plaintiffs) to purchase grain for resale. In 1964, Warren sought financing for working capital from Cargill (defendant). The parties executed a security agreement by which Cargill would loan money to Warren on “open account” financing with a limit of $175,000, and Warren would receive funds and pay expenses through drafts drawn on Cargill through Minneapolis banks. The drafts were imprinted with Warren’s and Cargill’s names. In exchange for the financing, Cargill became Warren’s grain agent, and Cargill was given right of first refusal to buy grain sold by Warren. In 1967, the parties executed a new contract which increased Warren’s credit line and gave Cargill authority over some of Warren’s internal operations, including requiring Warren to give Cargill annual financial statements, granting Cargill access to Warren’s books, and requiring Cargill’s approval before engaging in certain financial transactions. Cargill exercised its contractual authority and commenced a pattern of reviewing Warren’s finances and operations and making business recommendations to Warren. By the mid-1970s, Warren was shipping 90% of its grain to Cargill. Cargill later discovered that Warren was engaging in some questionable uses of funds, but instead of calling the loan, Cargill executed new security agreements with Warren, increasing its limit to $1,250,000. Warren’s debt later exceeded its credit line and Cargill became increasingly involved with Warren’s finances, including keeping daily debit positions and opening a bank account in Warren’s name, funded by drafts drawn on Cargill through a local bank. Warren subsequently went bankrupt. The farmers who sold grain to Warren sued Cargill for recovery of $2 million, alleging that Cargill had acted as principal for the grain elevator and was thus liable for its agent Warren’s contractual obligations. At trial, the jury found in favor of the farmers.