how does the prevalence of hiv virus in south africa in 1990 compare to the prevalence in 2015? what does the change suggest about south africa's aids prevention measures over that time span?

In shifting to a defense policy based upon the concept of "flexible response," president kennedy was indicating that he had grave doubts about thevalue of which previous defense policy? a massive retaliationb collective securityc containmentd air power

What side of the american civil war would you choose to fight for and why

What effect did ww11 have on empires that had been created by european nations