Answer:
The answer is difference threshold.
Explanation:
Also called just-noticeable difference or least perceptible difference, the difference threshold is the degree of a stimulus that must be changed in order to be recognised.
For it to be considered a difference threshold, the difference must be identified at least 50% of the time.
1. D. Axum
Axum is located in what is now Ethiopia, and was founded by Arabs combining Arabic and African cultures. Axum owed its prosperity to its location along the Red Sea, on the trade route between India and the Mediterranean. Axum exported ivory, incense, myrrh, and slaves. It imported textiles, metal goods, wine, and olive oil.
2. A: Arabic was the main language used when trading with other societies.
Although Arabic was the most common language used in trade, others were used as well, particularly Swahili. In everyday life West Africa had enormous linguistic variety.
During the high Middle Ages, the Roman Catholic Church became organized into an elaborate hierarchy with the pope as the head in western Europe. He establish supreme power. Many innovations took place in the creative arts during the high Middle Ages. Literacy was no longer merely requirement among the clergy.
<span>construction work is more dangerous <span>than teaching</span></span>
<span><span /></span>
