Read the sentence.

I wrote this book in order to help others solve a problem that I found challenging.

Which text feature would be most likely to include this sentence?

A index
B preface
C bibliography
D acknowledgements

they spoke with the president

explanation:

cultural/diplomatic relations. most medieval japanese   culture has chinese origins. writing, architecture etc.

answer: a tolerated diverse population

explanation: the city of baghdad formed to vast semi- circles on the right and left banks of the tigris twelve miles in a diameter.