What is ground wave communication? On what factors does the maximum range of propagation in this mode depend?

Explanation

### Step-by-Step Solution:

1. **Definition of Ground Wave Communication:**
Ground wave communication refers to a mode of electromagnetic wave propagation where the waves travel along the surface of the Earth. These waves "glide" or move smoothly over the terrain, allowing for communication over distances that are typically limited to the line of sight.

2. **Characteristics of Ground Wave Propagation:**
- Ground waves are primarily used for low-frequency radio transmissions.
- They can follow the curvature of the Earth, which allows them to reach areas beyond the horizon.
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