Strategy and Purchasing: Provide a two$-$ to three$-$page document answering the questions below:

What was GM$\text{'}$s business strategy and how did it affect the purchasing function?

Why does the purchasing function play a strategic role in organizations and particularly in GM$?$

What changes did Ignacio Lopez make in the purchasing strategy in GM$?$

Having the hindsight of the recession of $2008-2009,$ was Lopez right? Explain.