The answer is
bus topology.
Although considered obsolete nowadays, it is the simplest
and cheapest network topology to install and modify as only one main cable is
required for installation. It is also well suited for temporary and small
networks with a few nodes.
It is more difficult to obtain a trademark than to register a copyright.
Answer: Censorship.
Censorship is actually practiced not only in authoritarian regimes, but is put to higher levels in countries that are under authoritarian regimes. The best example of this would be North Korea. The North Korean leader Kim Jong-un highly restricts what the people of his country have access to, most especially when it comes to the internet.