They provided fresh water and fertile soil for farming
Explanation:
culture - shared values, practices, beliefs of a group
generic - standard, not specific
diffusion - process of spreading into a new place
dilute - to weaken something by reducing in strength or impact
Due to the short summers and harsh winters, it has become a tundra. Also, one benefit of living near the US border as a Canadian is that they are able to cross over and shop at our malls where we do not have clothes tax while they do.
The economic crisis and inflation.
It depends how the rest of the phrase is being said. just from that, it is a question. or it can be looked at as an open ended question