Interchangeable parts were identical and could be exchanged for one another in manufacturing of goods
As well as providing the alliance with its name, the geographical position of the German and Austro-Hungarian empires also gave the Central Powers at least one very important strategic advantage over the Allies they were fighting. It was much easier for the Germans and Austro-Hungarians to move troops, equipment and supplies from one battle front to another because they could do much of this on their domestic railway networks.
German soldiers exit trench
German soldiers exit trench
For example, the Germans could move 10 infantry divisions from the Eastern Front to the Western Front via a relatively straightforward journey across Germany. It was no more difficult for the Austro-Hungarians to move five infantry divisions from the Eastern Front to the Italian Front, or to the Salonika Front in the Balkans.
Answer:
Hunting, growing food, taking care of animals, supply gathering.
Explanation:
without the help of each other, they wouldn't be able to do all of that stuff prepared for the seasons.