Yes, that is exactly what you should tell them. 1  If two clauses are connected with a coordinating conjunction, it's a compound sentence. 2  If two clauses are connected with a subordinating conjunction, it's a complex sentence.
Trains were first- 1784, but cars weren't invented until 1890.
So, Trevithick invented the first train, Stephenson the first public railway line and the original Steam locomotive was invented and patented by James Watt in 1784, following many years of his work in improving steam engines in general.ichard Trevithick invented the first steam locomotive in 1803, but the iron rails couldn't carry the weight. From there, George Stephenson is credited with the first practica â¦ l steam locomotive.