Question

What evidence is there to support John A. Macdonald’s argument that BC would be better off joining the United States if the transcontinental railway was not built?

Answer 1

What evidence does your text cite?

Obviously BC would have more contact with the East coast with the U.S. transcontinental railroad if Canada hadn't built its own transcontinental railway.

https://www.history.com/this-day-in-history/canadas-transcontinental-railway-completed