Misc: In 1863 President Lincoln delivers his famous address at---------- , PA. ?

Questions

What structure consisting of many blood cells, feeds the foetus during pregnancy?

Which inert gas is a fission product of uranium nuclear reactors?

Mexico shares a southern border with Guatamala and which other country?

Who makes the last speech in Shakespeare's "Macbeth"?

Traditionally what anniversary is your 55th?