Answer:
Ancient civilizations based a large part of their economy and their subsistence on trade and exchange of goods. Thus, they were guided by a very simple premise: they traded what they had left over, to obtain in exchange what they lacked. For example, if a civilization overproduced wheat, it could trade that surplus for goods it did not have, such as animals. In this way, all civilizations covered their needs without the obligation to procure them all by their own hand.
Partial lunar eclipse, hope this helps:)
Answer: Short-term memory
Explanation:
Short-term memory is known to be information which an individual is presently thinking of. It is a type of memory which is for a short time because much information cannot be retained for a long time. In essence, it is temporary and very brief. It is also known as primary memory. if an individual is distracted, the information in short term memory can be lost. Thus, Mary is taking advantage of short-term memory.
