Answer:
The answers are the last two ensured representation of all citizens in the government & ended the practice of enslaving debtors
Explanation:
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The contributions of Cleisthenes/Solon to the development of Athens includes:
Cleisthenes and Solon ensures that the Athenian citizens participate in the Assembly and also laid the basis for democracy through eliminating debt slavery.
Therefore, the Option C and D is correct.
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