merchants and farmers benefited from this policy.
merchants became able to trade with other people and increased their numbers of consumers because they could leave the borders of the song. they also benefited by bringing foreing goods.
farmers benefited from this policy because they had the possibility to sell their products in a bigger market.
i think the best answer out of all of them would be c."ability to store water in leafy structures to prevent excess evaporation"
well one could be a environmentalist and one could be a kid