The correct answer is a preview
Explanation: A Preview is something done or said in advance, before anything else.
Most of the slaves sold to the slaveholders in Texas arrived by sea because they were brought from different countries.
The immediate result of the Black Death was labour shortage: (1).
It led to increase of wages of manual workers, and a better position of workers in defending their rights against their landlords: usually the landlords had all the power.
Answer:
Edad Media Temprana, Alta y Tardía, también conocida como el período medieval