Answer:
Cohort
Explanation:
Cohort studies refer to a form of medical study which is used to examine the reasons for the disease and to find its relation to the risk factors to medical outcomes. Usually, cohort studies track large groups of people, tracking their susceptibility to such risk variables in order to obtain answers to the potential causes of disease.
As per the question, researchers observe a group of people based on their smoking habits and tracked them for twenty years to observe its relation to lung cancer reflects the procedure of cohort studies.
The Civil War ended with a victory for the North. It used its superior resources to defeat the South. Sherman’s campaign in the South destroyed everything that could have helped the Confederate cause while Grant held Lee at Petersburg until Lee had no choice but to surrender. The war resolved the social issue of slavery. Lincoln had already issued the Proclamation of Emancipation which freed all slaves both in the North as well as the South. It abolished the system of slavery for African Americans who fought for the Union. It also preserved the Union and made America one nation.
There was still many white Europeans in charge of the Union of South Africa, and because of European Colonization, the native Peoples living there did not like that. This is why there is so many official languages in South Africa.
<u>Analysis: The power of the federal government is divided between the three branches: legislative, executive and judicial, which constitutes the "Separation of powers" in the strict sense. To avoid tyranny or despotism, the exercise of power by any of the three powers of the federal government is limited in several ways by the powers given to the other two, thus establishing the principle of limits and counterweights.</u> For example, the legislative branch of the Congress of The United States is limited and counterbalanced by the presidential veto; and the power of the president to appoint ambassadors, federal judges, and high federal officials are limited by the constitutional requirement that those appointments obtain the consent of the Senate.
This method of separation of powers has also been carried out, within each State, in its own state constitution through the division of state governmental power among the three branches of government of the State; the creation of checks and balances between the three branches of government State, and the delegation of governmental power to two lower levels of local government, counties, and municipalities.
