Do you think the we as a country played no part in the displacement of people from Iraq, Afghanistan, Syria and Sudan, it has all been caused by themselves?
These are countries full of ethnic and cultural tensions, corruption poverty, they have been at each other since the dawn of time (the borders and names change).
Pretty much like Europe pre 1900s.
No, I don't think we do have to take any responsibility, our presence only effects which particular group is kicking off this time, and where borders on maps have been drawn. If we had vanished from the face of the earth hundreds of years ago, these places would be just as they are, with maybe a few different faces and border lines.
They have not gone through the cultural changes coupled with 'world wars' that we have that bled us of the appetite to have at each other.
That is not to say we should not help in some way, but stop with your guilt complex.
I've taken the liberty of a small correction.
Thinking debt means lack of wealth, please learn some basic economics.
Oh would you look at that, the number of people without mortgages is increasing and social renters are falling.
So just as I say, overall wealth is increasing, but that still leaves millions of 'losers' (still a minority), but the wealth gap makes them (and me) feel things are so much worse.