Wich issue lead to texas seceding from the union

The issue of slavery lead to the Texas seceding from the union.  

What is slavery?

Slavery is also known as the enslavement, and they are both the state and the condition of being a slave, who is someone prohibited to stopped their service for an enslaver. It is generally the condition in which one human being was possessed by another.

After becoming Abraham Lincoln as the President of the United States,

The Politician of Texas and Sam Houston found himself under large public pressure and molded to break from the union as a bulk of cotton-growing and slave-holding farmers started fearing the achievable actions of Abraham Lincoln against slavery.

Therefore, the slavery issue is the main reason to the Texas seceding from the union.

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Answer:  

The issue of slavery lead to the Texas seceding from the union.  

Explanation:  

After Abraham Lincoln got elected as the President of the United States, the Governor of Texas, Sam Houston, found himself under tremendous public pressure and decided to secede from the union as a majority cotton-growing and slave-holding farmers started fearing the possible actions of Abraham Lincoln against slavery.

The ordinance of the secession was passed with 166 votes against 8 in the convention and thus, the state of Texas seceded.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain