What economic change resulted from the transportation revolution before the civil war?
1.the northeast became better connected to the western section of the country.
2. trade between the united states and europe was sharply reduced.
3.the system of slavery on southern plantations began to disappear.
4.the federal government began to regulate new businesses.

1. The Northeast became better connected to the western section of the country.

Explanation:

In the years before the Civil War, the United States experienced significant changes when it came to transportation. One of the most significant factors that led to this change was the transcontinental railroad built between 1863 and 1869. The railroad was particularly significant for the Western portion of the country, as it allowed it to become better connected with the rest of the nation. This also brought benefits to the Northeast, as it allowed it to be better connected to the West, providing another market for its goods.

b.

jim crow laws were enacted in northern states.

the answer is d because for c the actors can't love acting for the other's audience their not even in the same show, it can't be b either because the question is talking about the actors not the audience, and it can't be a because   it's not specific enough