1846
Because their racsist
No. Texas fought Mexico in 1836 becoming its own republic that year until 1845 (Texans were actually illegal insurgents during that war as they were technically part of Mexico). In '45 Tx became part of the US. In 1846 the US (which now included Tx) fought Mexico in a legally declared war.
The US has never declared war on Britain during World War II; they were absolute, staunch allies.
The Mexican War of 1846-1848 was a declared war.
On 13 May 1846, the US congress declared war on Mexico. Mexico never declared war on the United States.
because of the border problem after they got annexed
Germany declared war on the US, the US then declared war on Germany.
The US declared war on Japan. Germany also declared war on the US, and the US declared war in return
1848.
December 11, 1941, immediately after Germany declared war on the US.
The Territory of New Mexico became the 48th state in 1912.
In the year 1846.