Text: they take the spanish to their village and feed them, but in the middle of the night attack them and try to kill the spanish.

Correct capitalization: They take the Spanish to their village and feed them, but in the middle of the night attack them and try to kill the Spanish.

Text: he insisted on the existence of a conceptual realm within mathematics which transcends formal systems.

Correct capitalization: He insisted on the existence of a conceptual realm within mathematics which transcends formal systems.

Text: 6. of course traffic is not everything, there are many factors.

Correct capitalization: 6. Of course traffic is not everything, there are many factors.

Text: cesaro returned to torre annunziata in italy for a number of years after the death of his father in 1879.

Correct capitalization:
Cesaro returned to Torre Annunziata in Italy for a number of years after the death of his father in 1879.