GEOGARPHY: Which capital city is overlooked by the volcano Popocatepetl?

Questions

Whose headstone reads 'at rest, an american soldier and defender of the constitution'?

Whose headstone reads 'my jesus mercy'?

Whose headstone reads 'she did it the hard way'?

Whose headstone reads 'that's all folks'?

Whose last words were 'thank god i have done my duty'?