Answer:
This phrase shows how, in the Middle Ages, peasants owed their work to their "master" and had no freedom over their own production, with everything that held the power of the place owed.
Step-by-step explanation:
The sentence exposed in the question above shows how the peasants owed various obligations to the lords of the lands they occupied, and must place the interests of these lords above theirs. In that case, when the peasants 'harvest was ready to be cut, so were the lords' harvest. In that case, the peasants should reap the rewards of their masters first, and then reap their own.