The correct answer is letter B
The Black Death was a pandemic, that is, the widespread proliferation of a disease caused by the bacillus Yersinia pestis, which occurred in the second half of the 14th century, in Europe. This plague was part of the series of events that contributed to the Crisis of the Lower Middle Ages, such as the peasant revolts, the Hundred Years War and the decline of medieval cavalry.
The Black Death has its origin in the Asian continent, precisely in China. Its arrival in Europe is related to the commercial caravans that came from Asia across the Mediterranean Sea and arrived in European coastal cities, such as Venice and Genoa. It is estimated that about a third of the European population has been decimated because of the plague.
The disease spread, initially, through rats and, mainly, fleas infected with the bacillus, which ended up being transmitted to people when they were bitten by fleas - in whose digestive system the plague bacteria multiplied. At a more advanced stage, the disease began to spread by air, through sneezing and droplets. The precarious conditions of hygiene and housing that medieval towns and villages contributed to the spread of the disease - which offered conditions for the infestation of rats and fleas.
1) Invasions by Barbarian tribes
2) Economic troubles and overreliance on slave labor
3) The rise of the Eastern Empire
4) Overexpansion and military overspending
5) Government corruption and political instability
6) The arrival of the Huns and the migration of the Barbarian tribes
7) Christianity and the loss of traditional values
8) Weakening of the Roman legions
<span>Out of the ancient civilizations the empire which controlled the most land was the Persian Empire. It was under the leadership of Alexander the Great that the Persian Empire was finally conquered. The Empire was connected by a vast series of roads, most famous of which was the Royal Road, and they controlled a fleet of many ships used to conquer surrounding lands.</span>
