Their spirits where committed to what they believed in, and their attitude was positive and they didn't question there leaders.
At a high tide, the gates are closed. The water held inside the barrage, the turbine starts to work, turning the kinetic energy into power, or energy. As time goes by, there will eventually be a low tide, when the difference in depth are greatest. This results in the gates being opened up, letting the water rush out providing max amount of energy.
Hope this helps :)
They will supply more products to gain more profit.