How to find out background info on two poems?

Question

Does anyone know how to find out when and why these poems were written:
-Two scavengers in a truck, two beautiful people in a mercedes(Lawrence Ferlinghetti)
-Nothing's Changed(Tatamkhulu Afrika)
if possible, please include social ideas and ethics in the time period and places.

I have already looked on google and Bitesize
thankyou

Answer 1

Best Answer - Chosen by Voters

What about hitting wikipedia. Not for whatever scant info there, but for the links to other pages that are more helpful