The electromagnetic wave is self propagating, what I mean by that is, an electric field generates a magnetic field at 90 degree phase angle, and the magnetic wave you get as a result generates the electric wave at the same phase angle. The interchange of electric to magnetic and vice versa continues and lets the electromagnetic waves to travel without any medium. Quite interesting, really!
Answer:
It's hard understand each individual person considering the fact they are in large groups of people
Even though it might be the same subject or topic each person has their own personal equality that separates them from the group
Hope this helps
