Significant features of modern Greek history

I was wondering if any of you out there had some input on any of these four significant features of Greek history.

1.  The long term significance of western orientation of Greece from the time of Roman expansion to the present.

2.  The consequences of the collapse of the Roman empire.

3.  The change of nature of life of the average Greek person under Ottoman rule.

4.  The role of major powers in achieving Greek independence from Ottoman rule.