Need ! what was the longest-lasting effect of the losses in world war ii? nations realized they could not afford another world war. european leaders agreed to permanent peace treaties. millions of people never recovered their jobs and homes. factory owners decided to shut down rather than rebuild.

Answer;
Nations realize they cannot afford another world war.

The longest lasting effect of the losses in World War II is that the Nations realized they cannot afford another world war. 

Explanation; 
The second World War was one of the transformative events of the 20th century, causing the death of 3 percent of the world's population.
Continuous battles and bombing that resulted to widespread destruction of homes, properties and physical capital.
 It led discrimination and persecution, with the Holocaust as the most horrific example.
These effects and many others prompted the participating Nations to realize that they can not afford another world war.

The answer would be the second one. Before the second world war, the US was undergoing a depression, and millions of people were homeless and were living in shantytowns. The opportunity to fight as a soldier in a war gave many people jobs and officially ended the depression. Therefore, people could afford to reclaim their houses and soon after were also able to get other jobs.

Hope this helped!! :D