Answer: start a revolution and unite under a new constitution
Riches and a new route to Asia.
The primary thing that both of these nations did that showed they did not take the new American nation seriously was that they refused to give up land that was required of them in the treaty that was signed after the Revolution.
Correct answer: March 17, 1862.
Explanation: On March 17, 1862, Gen. McClellan army set sail from Alexandria.