Which of the following statements is FALSE? a. The U. S. declared war on Mexico on May 13, 1846.
b. Mexico declared a defensive war against the U. S. on April 23, 1846.
C. Both U. S. and Mexican forces sent troops to the region between the Rio Grande and the Nueces
River.
d. Negotiations by Louisiana Senator John Slidell put a temporary halt to U. S.-Mexican tensions
and hostilities.