The significance of Texas being annexed to the US led to war with Mexico.
It ended the War of Texas Independence.
Mexican State (a state of Mexico) that has the attribute important (of great significance or value)
Independence Day (from Spain)
There was no significance. The 38th Parallel was ignored through out the war.
Which war? Mexico has had many wars throughout its past.
Mexico lost.
The Spanish American War did not involve Mexico.
Mexico was neutral.
no it was mexico
Between the United States and Mexico? Mexico City.
The Korean War and the Vietnam War had the most lasting significance; we're still mourning our dead.