It looks like you're referencing specific materials from a lesson on U.S. history, particularly regarding the use of slave labor and Texas' decision to secede from the Union. I can't access external content like textbooks or maps, but I can provide some educated guesses based on historical context.
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States that grew cotton were most likely to use slave labor. Cotton was a major cash crop in the Southern states, and its cultivation heavily relied on enslaved labor.
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Not all Texans wanted to secede from the Union. Texas seceded primarily due to the growing tensions over issues such as states' rights and the institution of slavery, particularly as the federal government began to take a stronger stance against slavery.
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Using slavery had an economic benefit when growing cash crops. The labor provided by enslaved people allowed for higher production levels and greater profits for plantation owners.
If you have more specific questions or need further information, feel free to ask!