Can I get some feedback on the crisis below?

The housing price bubble, collapse, foreclosures, bailout of underwater mortgages

What corrective actions were taken by the federal reserve?

Quantitative easing

Purchase of toxic assets from financial institutions

Paying interest on reserve balances

In the analysis can you address the following points?

Actions taken by the Federal Reserve to mitigate the crisis

How the corrective action helped to restore stability to the financial system

How the corrective action should prevent recurrence of a similar crisis