What role does corporate-level strategy play in relation to business-level strategy?

Respond to all questions.

1. What role does corporate-level strategy play in relation to business-level strategy?
2. What roles do a firm’s core competencies play in a decision to diversify into new businesses?
3. Why does unrelated diversification have a worse performance record than related diversification?

Write your answers in a 1-page Word document formatted in APA style.