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.
1 1798 - the Lake Lock Rail Road, arguably the world's first public railway, opened in 1798 to carry coal from the Outwood area to the Aire and Calder navigation at Lake Lock near Wakefield, West Yorkshire,on a distance of approximately 3 miles. 2  The load of three waggons was hauled by one horse. 1807 - First fare-paying, passenger railway service in the world was established on the Oystermouth Railway in Swansea, Wales. 2  Later this became known as the Swansea and Mumbles Railway although the railway was more affectionately known as The Mumbles Train (Welsh: Tren Bach I'r Mwmbwls).