Identify the structure used in the sentence

The idea of placing meat on a bun, however, came from the United States.

Simple

Complex

The structure used in the sentence is complex.

Complex

The structure used in the sentence is complex.

To identify the structure used in a sentence, you need to analyze the sentence's components and how they are connected. In this sentence, we have two independent clauses connected by a subordinating conjunction ("however").

"The idea of placing meat on a bun" is one independent clause, and "came from the United States" is another independent clause. These two ideas are connected by the subordinating conjunction "however" which indicates a contrast or opposition.

Therefore, this sentence exhibits a complex structure, as it contains two independent clauses joined together by a subordinating conjunction.