In 1810.
This war started in 1846.
No, the Mexican American War began in 1846.
No, in 1846.
Yes.
It was in 1981 in September
Right. It was 'borrowed' by Americans after the Mexican-American War.
From 1846 to 1848.
In the contested Neuces Strip.
It is the 200th anniversary (hence, bicentennial) of the start of the Mexican War of Independence (1810-1821).
It was a skirmish on a disputed no man's land where Americans died. This was used as a pretext to start the war.