Austria-Hungary was aligned with Germany during both first and second war (then only Austria) - so they have to be on the same side (this excludes options B and D).
Also, Great Britain was against Germany and Austria-Hungary, so we can exclude option C.
The correct answer is the following one:
A. Austria-Hungary, Germany and the Ottoman Empire versus Serbia, Russia, France and Great Britain
Answer:
Louisiana Purchase was the acquisition of the territory of Louisiana by the United States from France in 1803. In return for fifteen million dollars, or approximately eighteen dollars per square mile, the United States nominally acquired a total of 828,000 sq mi. However, France only controlled a small fraction of this area, most of it inhabited by American Indians; for the majority of the area, what the United States bought was the "preemptive" right to obtain Indian lands by treaty or by conquest, to the exclusion of other colonial powers. The total cost of all subsequent treaties and financial settlements over the land has been estimated to be around 2.6 billion dollars.
By its terms the Louisiana Territory, in the form France had received it from Spain, was sold to the United States. For this vast domain the United States agreed to pay $11,250,000 outright and assumed claims of its citizens against France in the amount of $3,750,000.
I hope this helps!
(I answerd quick because i copy and pasted of my original work)
The answer to your question is number 4
Trade increases competition and lowers world prices, which provides benefits to consumers by raising the purchasing power of their own income, and leads a rise in consumer surplus. Trade also breaks down domestic monopolies, which face competition from more efficient foreign firms.
