The correct answer is "Europe struggled to recover from a lost generation."
After World War I, the Germany economy was in ruins. This is because they were held responsible for the beginning of the war and were forced to pay reparations (as decided in the Treaty of Versailles).
On the other end of the world, the US had a booming economy right after World War I. The 1920's in the US was an era of economic prosperity in which individuals had more disposable income to buy goods/materials.
France and Great Britain still remain allies after this war, as they both have a common goal of recovering from the war and ensuring Germany does not gain significant political power.
This leaves the first statement. The "Lost Generation" is a phrase used to display how a significant amount of the population was lost during the war due to the high number of deaths in World War I.
<em>Competition, is when two allies (or just random people too I guess) become rivals in order to complete a certain task first. Normally this would mean that a group of rivals are competing to earn a certain title, for example best at something, or just to make themselves look better.</em>
<em>It effect business because this creates tension often, meaning that the 2 rivaled sides are not exactly the most friendly to one another.</em>
<em>Hope this helps and have a nice day.</em>
<em>-R3TR0 Z3R0</em>
