In some regions of the world, people do not have clean water. Other people are trying to help, but it's difficult. What do you think?

Can someone read this article and tell me the 1) key ideas and 2) one key quote (copy and paste the link the article is not to long at all)from

The federal crescent is shaped like what letter

The were so closely connected to the tang dynasty that korean elites used chinese as their written language. they set up a statewide academy that trained government officials in the philosophy of .