I'm pretty sure the answer is B if not the try D
Answer:
1861–62: King Wilhelm I became King of Prussia and he appointed Otto von Bismarck on 23 September 1862, Minister President and Foreign Minister, who favoured a 'blood-and-iron' policy to create a united Germany under the leadership of Prussia.
Explanation:
They would step harder because their body uses more force on each step.
To protect any of its members or country threatened by communism