What does the term "lose lips sink ships" mean?

idiom meaning "beware of unguarded talk"

James says in the Bible that when we put bits into the mouths of horses to make them obey us, we can turn the whole animal. He says that we can take ships as an example that although they are so large, and driven by strong winds, they are steered by a very small rudder. Likewise, the tongue is a small part of the body, but it makes great things. As great forests can be set on fire by a small spark so the tongue also is fire. In other words, we can destroy relationships or construct relationships, we can build great things or destroy many with our words.

b. the 200th birthday of the united states

after the roman empire, the catholic church began to unify by taking on many duties of a government.