Final answer:
The Frankfurt Parliament ended in 1849 because it failed to draft a constitution that would unite Germany as an empire. The attempt was rejected by the aristocracy, the military, and King Frederick William IV of Prussia.
Step-by-step explanation:
The Frankfurt Parliament ended in 1849 because it failed to draft a constitution that would unite Germany as an empire. The attempt to establish a centralized emperor and a unified nation was rejected by the aristocracy, the military, and King Frederick William IV of Prussia. The Frankfurt Parliament faced challenges in creating meaningful links with the German population outside of the capital cities, which hindered their progress in achieving their goals.