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,
$\frac32=\frac{220}{8\times3\times d}$
$\implies d=\frac{55}9=6.12$
It demonstrated the importance of loyalty to ones country the answer is C.
Answer:
C. Battle of Antietam
Explanation:
The Battle of Antietam was the single bloodiest day of the war, with both sides suffering enormous losses. Lee's army barely withstood the Union assaults, then retreated to Virginia the next day.
States formed constitutions and legislatures after the war
