I believe, "Tanks were a fast and reliable means of transporting soldiers" is NOT true.
The answer for this is "Compromise of 1850".
The Compromise of 1850 is a set of laws dealing with the issue of slavery. California was admitted as a free state, upsetting the groups in favor of slavery and satisfying those opposing it in the U.S senate. In Addition, California abolished the slave trade by entering the Union as a free (no slavery) state.
She led the state congressional union which allowed the 19th amendment to be passed in New Mexico. once the state had passed ratified it the federal government passed the women's suffrage rights.