Question

Soon after the first real trains appeared. Some began building ones that were miniature in size who were engineers.

What is the best way to combine these thoughts into one sentence?

Soon after the first real trains appeared, some engineers began building trains, and they were miniature in size.

Soon after the first real trains appeared, some engineers began building miniature ones.

Soon after the first real trains appeared, some engineers that were miniature in size began building ones.

Soon after the first real trains appeared. Ones that were miniature in size were built by some engineers

Answer 1

Soon after the first real trains appeared, some engineers began building miniature ones.

Step-by-step explanation:

Its in a simplified form and includes all the information stated in the previous forms.