In general when they need to get done with their basic requirements or their needs they fight for that if the authority didn't respond proply..
sequence like salary incresment.
then the Labour union strikes to win their requirement.
Answer: Improved commercial practices led to an increased volume of trade and expanded the geographical range of existing trade routes including the Silk Roads, trans-Saharan trade network, and Indian Ocean promoting the growth of powerful new trading cities. The Indian Ocean trading network fostered the growth of states.
Explanation:
I believe its either A or C. Im thinking A more than C though