"You rang the doorbell" is an indepent clause, because it can exist on its own. So is "but no one answered," because it is using a coordinating conjunction, which acts as a independent marker for an independent sentence. See https://owl.english.purdue.edu/owl/resource/598/01/.
a complex compound word involves using multiple hard compound words in a sentence.
"because"
Complex, difficult, perplexing, complicated; Compound, multifaceted
If that sentence not complex enough, how about this: Our old friend Jeffrey is a well educated and versatile indivdual; besides English, he teaches math.
That's a complex fraction.
A compound complex sentence is when you combind a compound sentence and a complex sentence.
Simple sentence, compound sentence, complex sentence and compound complex sentence.
complex
The difference between a compound sentence and a complex sentence is that a compound sentence has two independent clauses, connected by a Coordinator. A complex sentence on contains one independent clause. A complex sentence also always contains a subordinator.
nothing
A compound sentence has 2 or more coordinate independent clauses. A complex sentence is made from a dependent and independent clauses joined together.
Simple, complex, compound, compound -complex are the kinds of sentences in English Language. A complex sentence has nothing to do with Islam or a Muslim.
Compound-Complex sentence
simple, compound, complex, compound-complex
This sentence is a simple sentence because it contains only one independent clause.
Sentence according to structure are: simple, compound, complex and compound-complex.
A complex sentence has a dependent clause and a compound-complex sentence has two independent clauses.