Question

what 2 inventions helped jazz reach even remote locations of the u.s

Answer 1

radio altimeter and earth conductor helped jazz

Answer 2

The two inventions which helped jazz to reach remotest locations of the United States are:

• The inventions of Radio Altimeter: An airborne electric device which is used to "measure the height" of the aircraft.
• The invention of Earth conductors: It is also called as earthing lead. It connects the "installation earthing terminal" to the earth electrode.

These two inventions brought a huge revolution and helped jazz reach even the most remote locations of U.S.