Final answer:
The purpose was to improve transportation and accessibility between the holy places and create a pilgrimage route for religious tourists.
Step-by-step explanation:
The purpose of the new street connections between the holy places of Rome, as commissioned by Pope Sixtus and developed by Gian Francesco Bordini in the 16th century, were primarily to improve transportation and accessibility between the holy places. The Catholic church wanted to make it easier for pilgrims to visit multiple holy sites without facing difficulties in navigating the city. Creating a pilgrimage route for religious tourists was an important goal in order to attract more visitors to Rome and enhance the city's reputation as a holy destination.