Many inventions have changed society. Some of the most revolutionary inventions are related to communication The alphabet, the printing press the television, and the computer are all valuable. They have had a great impact
on society. Before the creation of the alphabet, people who were able to write had to learn thousands of symbols.
It was not possible for everyone to learn to read or write. The alphabet made way for the printing press, which let
people share knowledge on a very wide basis. The television and personal computer have united humans and
their collective knowledge in a way that ancient Greeks and Romans could not have dreamed of.

these inventions better communication.

A: required
B: suspended
C: governed
D: enabled