Simple
The types of clauses that make up a Complex sentence.
What are independent and dependent?
Because is an example of this.
What is a subordinate conjunction or SWABI?
A comma is not required when the independent clause is situated at this place within a complex sentence.
What is the beginning?
Two independent clauses are joined by this in a compound sentence.
What is a comma and a coordinating conjunction (FANBOYS) or a semicolon?
What does the "S" stand for in SWABI
Since