assuming efficiency of each man to dig trench, in one day, for one hour is constant,

so one man, working for one hour in one day can dig 1.5 m
so 8 men, working 3 hours a day and will take, say $d$ number of days and efficiency will be constant. so,
$\frac32=\frac{220}{8\times3\times d}$
$\implies d=\frac{55}9=6.12$
Alexander had previously prepared takeover by defeating the Persian army at Issus and captured the Mediterranean eliminating the threat of a Persian naval invasion. As well as keeping Persian land reinforcements from coming from the West, which was key in focusing on other points.
One would be nationalism because it forced all nation states to integrate together and become one same culture and religion ,knowing that not all people have the same religion it would disrespectful to that state and imperialism because It made Europeans seek for land to make more empires and establishes territories such as Asia and Africa .Cause conflict between these multiple areas
Answer:
five factors: (1) the promise of salvation and eternal life for everyone was an attractive alternative to Roman religions; (2) stories of miracles and healings purportedly showed that the one Christian God was more powerful than the many Roman gods; (3) Christianity began as a grassroots movement providing hope of a better future in the next life for the lower classes; (4) Christianity took worshipers away from other religions since converts were expected to give up the worship of other gods, unusual in antiquity where worship of many gods was common; (5) in the Roman world, converting one person often meant converting the whole household—if the head of the household was converted, he decided the religion of his wife, children and slaves.
Explanation: Bart D. Ehrman