<human>:  When did the Renaissance begin?
<bot>: The Renaissance began in Italy, and spread throughout Europe. The Renaissance was a period of artistic, cultural, and intellectual renewal that began in Italy during the 14th century and lasted until the early 17th century. During this time, many artists and intellectuals rebelled against the Medieval worldview, and began to see the world in a new way. They believed that the world was rational, that there were objective truths, and that these truths could be discovered through reason and observation.