Final answer:
A semicolon is used to connect two independent clauses that are closely related, especially when not joined by a conjunction or when separated by transitional phrases. It is also used to distinguish elements in a list that contain commas themselves.
Step-by-step explanation:
The use of a semicolon can make a significant difference when connecting two independent clauses. It is important to use the semicolon correctly to clarify the relationship between the clauses and to avoid run-on sentences or comma splices.
Independent clauses that are closely related in meaning, but not joined by a coordinating conjunction, can be connected with a semicolon. This creates a compound sentence without the need for a conjunction.
When transitional phrases like 'for example', 'however', 'therefore', or 'indeed' are used, the semicolon helps to join the main clauses while clearly signaling the transition between the two.
Semicolons also solve the problem of separating items in a series when those items contain commas themselves. This clear separation helps to avoid confusion about how the various elements of the sentence interact.