He makes them get off the bus because he makes them go defense on one bus and offense on the other bus. Before this it was blacks on one whites on the other. What he did in this situation was a good strategy. He was trying to make the team come together and not be appart. What he was trying to get into their heads is that just because your skin tone is different doesn't mean anything when they are on that team because they're a family.
Subsistence agriculture is the production of food primarily for consumption by the farmer and mostly found in less developed countries. Commercial agriculture is when farmers grow food for a profit.
