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,
$\frac32=\frac{220}{8\times3\times d}$
$\implies d=\frac{55}9=6.12$
Harappan civilization forms an important landmark in the prehistory of the Indian subcontinent. The civilization offers an excellent example to the modern world in various ways. Their expertise in town planning, water management and harvesting systems as well as drainage mechanism is unparalleled.
Answer:
The answer is C. Liberty.
Explanation:
By denying Eric his choice to vote for his preferred candidate, his right to vote freely and without duress was violated. Liberty is enshrined in the United States Constitution and this denial has violated the principle of liberty but taking away his freedom to choose who he votes for.
The Articles of Confederation were created the way they were because of the way the British government had oppressed the American colonists. Therefore, the Articles of Confederation were structured in a way that allowed the federal government little to no power over taxes or individual states. Each state has its own individual government that created its own laws and printed its own money.