Because of the 18th century, people today have been inflating balloons of fabric or canvas with warm air and sending it aloft, the Montgolfier brothers heading as far as to experiment with very first animals in 1782, and afterwards, when altitude didn't get rid of them, human beings in 1783. https://balloon-arch-frame76319.daneblogger.com/35611567/ballon-arch-for-dummies