Regional Economists Have Amassed Evidence Over the Decades Showing That

Regional economists have amassed evidence over the decades showing that:

A) tacit knowledge spreads very quickly geographically.
B) knowledge creation and technology development tends to agglomerate.
C) agglomeration in manufacturing was more of a myth than a real process; processes were rapidly copied in other parts of the world.
D) technology is quickly transferred today because of the development of communications and the Internet.