That is false. Congress does not need the help of the president. In fact, the President has no authority to regulate trade, only Congress does.
The answer is c. Civil War. The states of the South were
against any interference from the Federal government particularly on the issue
of slavery. When Lincoln was elected,
the Southern states felt that their rights to own slaves would be jeopardized and
this would lead to Civil War.
Primarily alternative way that these railroad companies used their land was to either sell it or rent it out to private business, and occasionally individuals, since the rail companies did not always need all the land they were given for development.
