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,
$\frac32=\frac{220}{8\times3\times d}$
$\implies d=\frac{55}9=6.12$
Here's a look at weapons inspections in Iraq from 1991 to 2007. ... elimination of Iraq's weapons of mass destruction and some ballistic missiles ... April 3, 1991 - The United Nations passes Security Council Resolution 687. ... September 6, 1991 - Iraq blocks the use of helicopters by UNSCOM teams.
Foreign policy that is aimed aimed at controlling foreign trade by holding colonies and defending them against other foreign powers is: imperialism
Imperialism refers to the view that a country should dominate others in a certain way in order increase its power. Controlling foreign trades by holding colonies is a form of political and economical domination that was popular among Empires in Europe.
The thing which was a major factor that threatened the major unity in the United States in the mid-19th century was:
<h3>The Great Depression</h3>
This refers to the period around 1929 in the United States which has a profound effect on the national economy.
This led to the failure of many banks, increase in unemployment and high deflation rates which all threatened the national unity.
Read more about Great Depression here:
brainly.com/question/441267
