When Stephen F. Austin returned to Texas after his time in prison, what message did he have for his fellow Texans? That Mexico was better than Texas and everyone should move there.
That Texas had no choice but to accept the laws and leadership of Mexico.
That the Texans should prepare for war against Mexico.
NONE of these answers are correct. (incorrect I chose this last time)

That the Texans should prepare for war against Mexico

Explanation:

Following the eventual release of Stephen F. Austin in 1835. He realized that Texas is on the verge of rebellion and it appears that Texas and Mexico's future no longer aligned.

Therefore, in a speech he gave in March 1836 at Louisville, he urged the people of Texas to revolt and prepare for war.

Hence, in this case, the correct answer is "That the Texans should prepare for war against Mexico."

eliminate individuals who opposed his rule

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).