The building of the Transcontinental Railroad had a dramatic effect on the United States. Which of the following was not an effect of the railroad?

Why did the treaty of paris strain the american alliance with the french? 1.the french had expected to control the negotiations. 2.the french were upset with the generous boundaries granted to the united states. 3.the french lost many of their colonies in the negotiations. 4. the french had supported the british throughout the war.