Amajor result of the civil war was that it a. reinvented the northern economy b. many people were killed c. it preserved the union d. the country thrived as a whole?

It preserved the Union

Explanation:

Although the Civil War was a traumatic episode in the history of the United States, it allowed the solution of irresolvable problems since 1776: it succeeded in abolishing slavery and reuniting the different states into a single, indivisible nation.

During the four years that this war lasted, more than 3 million men were mobilized and casualties reached the figure of 617,000, that is, 2% of the contemporary population. The North lost 359,000 men and the South 258,000. There were more deaths due to epidemics and diseases than to the war itself. To this must also be added the tens of thousands of civilian victims. This conflict is, along with the Second World War, one of the bloodiest in which the United States has participated.

Regarding the development of the country, before and after the war, we can affirm that as a final result, the US was considered one of the most powerful nations of the time and the armament lift of the moment greatly helped its performance during the future world wars.

no every country is held to the same degree as others just some member countries such as the usa and germany are more economically sound so the need to show there support to all others  

france,russia and prussia had absolute monarchy and it meant:

when louis xiv inherited the throne, he was able to serve as his chief minister.louis xiv ruled as an absolute monarch.