Why did President Polk declare war on Mexico?

there was a misunderstanding in the treaty settling the tex-mex border

Explanation:

american soldiers were killed at the rio grande river because they thought that was the border. as opposed to the mexican soldiers that thought the border was the river nueces

cultural history is your answer

a overment ran by a signle strong leader is also known as multiple things depending on the country and the coutnrys belifs and relgions

president,dictator