Final answer:
Lincoln's developments for war with Mexico differ from Polk's addressed developments
Step-by-step explanation:
The developments Lincoln implies that caused a war with Mexico include his policy of banning slavery in any new states formed from Mexican territories and his stance on the border dispute between the US and Mexico. On the other hand, Polk addresses different developments in his war message. He focuses on the Mexican refusal to negotiate a boundary settlement, the Mexican invasion of US territory, and the shedding of American blood on American soil as the causes for war.
Learn more about Causes of the Mexican-American War