If both the President and Vice President can no longer serve, who becomes President?

Brainles asap!me : -how has religious fundamentalism been used by extremists in the middle east?

How did the international community respond to south africa’s policies in the 1980s?

In the gettysburg address, which rhetorical device does abraham lincoln employ when he says, "the world will little note, nor remember what we say here, but ic never forget what they did here"?