he reintroduction of slavery in the fourteenth century occurred largely as a result of feelings of Italian racial superiority. continued warfare and the capture of African prisoners. papal decrees calling for a paternal relationship with heathens. the shortage of labor caused by the Black Death.

sorry, i dont know...

Explanation:

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.