Which statement about the bubonic plague in the 14th century is most accurate?
a) improved sanitation systems eliminated the threat of the plague.
b) advances in medicine halted the spread of the plague.
c) trade between europe and asia stopped just before the plague began
d) the death toll from the plague led to labor shortages

The correct option is D

The black plague, bubonic plague or black death was a pandemic of plague that ravaged Europe during the fourteenth century and was transmitted by fleas transported by rats. It is believed that the epidemic emerged in Central Asia, from where it passed to Italian cities with great maritime activity such as Genoa, and from there to all of Europe. The Black Death ended with more than a third of the European population and some 45 million people worldwide.

The great loss of population brought economic changes based on the increase of social mobility according to the depopulation, this eroded the obligations of the peasants (already weakened) to remain in their traditional lands. The plague caused a contraction of the cultivated area in Europe, which brought down the agrarian production. This fall reached 40% in the northern part of Italy, in the period between 1340 and 1370.

- three-quarters or two-thirds..

- "the constitution provides that an amendment may be proposed either by the congress with a two-thirds majority vote in both the house of representatives and the senate or by a constitutional convention called for by two-thirds of the state legislatures."

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