Steeler Manufacturing uses an unrelated diversification strategy throughout its operations. For instance, Steeler has five core businesses, all of which are unrelated. Each of its businesses is large and indicates Steeler's success in implementing an unrelated diversification as a firm.

highly-diversified

Explanation:

Based on the scenario being described within the question it can be said that Steeler Manufacturing would be considered a highly-diversified firm. This term refers to a business/organization that has a wide varied array of operations, all of which are completely unrelated to one another. Which is exactly what Steeler Manufacturing has with it's five subsidiaries. All of which are successful.

They use a capital budgeting approach that has a bigger planning cycle, also focus is on shareholder value

Explanation:

Navistar Trucking adopted capital budgeting accounting system. This entails estimating if the price being paid for long term investments in projects and equipment is worthwhile.

Methods like internal rate of return, payback period, and net present value are used to assess value of investment.

Navistar trucking plans its capital budgeting in 5-10 years unlike traditional approach that does so every year.

Also focus is on increasing the value of shareholders over time.