The Trickle-down-Theorie refers to the fact that in the process of economic development, special preferential treatment is not given to the poor, disadvantaged groups or poor areas, but the limited development of groups or areas benefits the poor people or areas through consumption, employment, etc., and promotes their development.
According to the above definition, which of the followings is belong to the Trickle-down-Theorie?
Farm tourism in the suburbs of the city during the May Day holiday is heating up year by year