Answer:
To set up the next paragraph, which describes more military uses of the bicycle after 1890
Explanation:
A. An effective outline states whether reference sources are credible or biased.
During World War I, the German Empire was one of the Central Powers that lost the war. It began participation in the conflict after the declaration of war against Serbia by its ally, Austria-Hungary.
There was a large desire for slaves because these slaves didn't need to be paid, as long as they were fed, they would be able to work for any amount of time for next to no cost at all.
