On what factors, does the maximum range of ground wave propagation depend? How can the maximum range of ground wave propagation be increased?

Explanation

The maximum range of ground wave
propagation depends on :
(i) the frequency of
wave (ii) power of the transmitter.
The maximum range of ground wave propagation can be increased by increasing the
power of transmitter which is so only for very
low frequency band (VLF) and not for medium
frequency band (MF).