The answer is A: Maryland and Pennsylvania.
Cornu was also used by the ancient Roman army to communicate with troops
After a public policy has been implemented, usually through a process of drafting and signing a bill into a law, the policy is enforced through federal and local law enforcement.
<span />
They support communist regimes but are not forcing states to revolt.
The communist government of China was opening talks with Nixon during the 1970s. The US was concerned about communist spread as they had been throughout the Cold War. In these talks they wanted to be reassured they could have a peaceful relationship with China. Chinese leaders are saying here they support revolutions in their right to revolt and become communists but will not send fighters. He does indicate that they would allow volunteers to fight but they would not be sent by the Chinese government.