It's too short.write at D..
Biological warfare, also known as germ warfare, is the use of biological toxins or infectious agents such as bacteria, viruses, insects, and fungi with the intent to kill, harm or incapacitate humans, animals or plants as an act of war.
Without big farms to run, the people in the North did not rely on slave labor very much. In the South, the economy was based on agriculture. ... The North wanted the new states to be “free states.” Most northerners thought that slavery was wrong and many northern states had outlawed slavery.
Answer:
(D) there was a religious upsurge as a result of social and economic problems.
Explanation:
At the end of the Classical Age, "there was a religious upsurge as a result of social and economic problems."
This is true in the sense that the classical age which lasted between the 8th century BC and 6th century AD was based majorly on the Greco-Roman world civilization.
This classical period was followed by the Middle Age period in which there were various socio-economic problems such as mass migration, invasions, rise in religions (including Christianity and Islam), war, and diseases such as the Black death.
The answer is 18, you just have to count the total number of cubes