Why are death rates decreasing?

Information about new drugs and techniques for healthy living come to developing nations all the time. Much of the world has the internet and modern information. Latrines end the spread of much disease. One pill a year wipes out worms. Removing standing water reduces mosquitoes and can rid an area of malaria. Circumcising men ends female to male transmission of AIDS. Getting rid of worms in women reduces a woman's chances of catching AIDS. Knowledge is power. People can accomplish quite a lot in spite of their corrupt government.