This is a false color rendering of cumulative irradiance for December 21 on the roof of a proposed building in Japan, taking into account seasonal vegetation. The orange color indicates the best locations for photovoltaic collectors. Looking at this picture, which locations are the best for photovoltaic collectors?

- "the basic difference between keywords and subjects is that subjects (or "subject headings") have been predetermined, while keywords have not. a keyword is an easy place to start because you can use any word that seems to fit your search; this is called "natural language" searching."

the answer is allusion. give me brainliest

i may be wrong but i think your answer is flashback

the development of trade during the middle age increased to the change given in the agriculture, which gave money, industry and markets a bigger importance in economy. the agriculture production was more than the consumption, which meant the creation of wider markets out of the areas. besides, with the end of multiple wars, the population increased and new trade routes were created.