In the late 1700's through the 1800's mail was sent by balloon on a very few occasions, but balloons have obvious drawbacks as mail service vehicles. The first official mail flight using an airplane was from Allahabad to Naini, India, in February of 1911.
Hot air ballons were invented in 19218237 a.d.If u read this post a commentif u dont then thats mean
the penny post was invented in 1888
It was invented in 1980.
Air Post was created in 1990.
the post card was invented on 1869
the post card was invented on 1869
When was Air Conditioners invented
Air tanks were invented to hold compressed air.
1986
In 1861.
it was invented in 1974 by art fry.
The hot-air balloon was invented in 1783.