Neuroscientists conducted research with taxicab drivers in london and found that taxicab drivers, who are required to learn and navigate large areas of cities, had the that was larger than that of other drivers.

How does the principle of federalism affect the u.s. government? a. it guarantees that the united states will always be a representative democracy b. it ensures that the state governments have greater authority that the federal government c. it creates both separate and overlapping powers for the federal and state governments d.it divides the federal and state governments into three branches