Why would Monroe decide to issue the Monroe Doctrine alone even though Britain offered to issue a joint statement?

2 points
So that the United States could appear as a stronger force in world politics
So that the United States could use Britain’s military to block European efforts in Latin America
So that the United States could display its increased military strength
So that the United States could demonstrate that it no longer wanted to be allies with Britain

1. So that the United States could appear as a stronger force in world politics: By issuing the Monroe Doctrine alone, Monroe could demonstrate that the United States was a powerful and independent nation capable of making its own decisions and enforcing its own policies on the world stage.

2. So that the United States could use Britain’s military to block European efforts in Latin America: By acting alone, the United States could still benefit from British support in enforcing the Monroe Doctrine without officially forming an alliance with Britain. This would allow the United States to prevent European colonization in Latin America while maintaining its independence.