In the Middle Ages, nobles exchanged land for military service with _____________________, or warriors who fought on horseback. (serfs/knights)
त्यतिबेलाको स्थितिलाई मध्यनजरमा राख्दै अहिले नै हामीले रणनीतिहरु तयार गर्नुपर्ने हुन्छ ।