Charlemagne united most of Europe under one ruler in the 700s. What was another one of his accomplishments?
A. He became a bishop in the Catholic Church
B. He became the emperor of the Byzantine Empire.
C. He became a leader in the fight against the Ottomans.
D. He became the first Holy Roman Emperor
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In e. c. tolman's experiment, some rats were trained to run through mazes for standard food goals, while other rats were allowed to explore the mazes for 10 days without food goals or other rewards. later, when food rewards were placed in a box at the far end of the maze, the previously unrewarded rats reached the food box as quickly as the rewarded rats after only one or two trials. this experiment demonstrated that the rats had the ability to form of their surroundings.