50 POINTS AND BRAINLIEST yep

Which sentence is the best explanation of how food surpluses led to a job specialization during the neolithic revolution

How did the union blockade of the southern coast affect the confederacy? it forced the confederacy to build new railroads. it contributed to shortages of weapons and food. it encouraged europe to trade with the south. it halted all trade, leaving the south without supplies.

Who was marshall mcluhan and what did he have to do with communication theory?