Many european nations have invested in improving sources of renewable and alternative energy. the panels on this german house are harvesting a. nuclear power b. solar power c. wind power d. hydroelectricity

Who ever answers first gets ! trade in the vedic age led to a.the rise of kingdoms because of the importance of controlling land and long-distance travel routes b.the building of an extensive system of roads because of the difficult terrain c.the creation of a large banking class because of the need to exchange different currencies d.the development of a centralized government that controlled the economic decisions of its people