You still need to pay your sister the $25 because you must keep your word. A promise is a non-negotiable instrument because it is not in writing. If you were to have it in writing that it could be a more arguable case.
Answer:
C. Health Care Costs
Explanation:
Aging and population growth both contribute importantly to the rise in health care costs.
Answer:
Correct answer is it served as a unifying force that helped launch an Arab empire.
Explanation:
First option is not correct as the conquest of Mongols came much later in the period of the Late Middle Ages.
Second option is correct because a Muslim Empire that stretched from Mesopotamia to Spain became a leading force in the region.
Third option is not correct as Persian Empire was already weakened by the Byzantines.
Last option is also not correct as the Byzantine Empire didn't had enough power to subdue new force that appeared in the nearby.
