4. Which technological development forced inhabitants of the southern states to weigh the benefits of economic development and growth versus the costs of the expansion of slavery?

It's most likely choice a, it makes the most sense in my opinion.

C. is the answer ur welcome

Texas’ gulf coastal plains are the western extension of the coastal plain extending from the atlantic ocean to beyond the rio grande. its characteristic rolling to hilly surface covered with a heavy growth of pine and hardwoods extends into east texas. in the increasingly arid west, however, its forests become secondary in nature, consisting largely of post oaks and, farther west, prairies and brushlands.

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