Read the sentences from the second paragraph of Gallatin’s speech. By the most solemn treaties between us and foreign nations, Texas has been declared within the limits of Mexico. If there was any claim on the part of the United States to that country, it was expressly renounced by these treaties.
Which BEST explains why this reasoning is effective?

A
It is based on political experience.

B
It is based on legal precedent.

C
It is based on personal integrity.

D
It is based on an emotional appeal.