How did the growth of the railroads affect supply and demand for natural resources in the United States? The growth of the railroads decreased the supply of natural resources. The growth of the railroads decreased the demand for natural resources. The growth of the railroads increased the demand for natural resources. The growth of the railroads had no effect on the supply of natural resources.

the right answer for the question that is being asked and shown above is that: "their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.  " the  participant in european imperialism is being described below is that  their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful. 

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.