look up CSMA/CD....
these days each node can talk whenever it wants thanks to full duplex communication.
The invention of writing allowed people to communicate more broadly than had previously been done.
One
Distribution
It allowed leaders in different parts of an empire to easily communicate.
Yes...why not?
the internet allowed people to communicate globally and almost instantly
depends on the states population!
samuel F.B. morse
Telephone And Radio
Totally depends on the hardware and software and their MTU (Maximum Transmission Unit). Usually MTU is set to 1500 bytes.
See the related question listed below
Samuel F.B. Morseyour qay :)