What are 2 causes of the Mexican-American War?

A border dispute over whether Texas ended at the Nueces River (Mexican claim) of the Rio Grande (U.S. claim)

An attack on American troops by Mexican soldiers in the disputed area between the two rivers on April 25, 1846.

The Unites States annexation of Texas in 1845.

Explanation:

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)

yes

explanation:

the fighting words doctrine, in united states constitutional law, is a limitation to freedom of speech as protected by the first amendment to the united states constitution. in 1942, the u.s. supreme court established the doctrine by a 9–0 decision in chaplinsky v. new hampshire.