The fall of the tang dynasty was caused in great part

a) the invention of gunpowder
b) the imposition of heavy taxes
c) the doubling of the chinese population
d) the restoration of the civil service system

Taking into account the statement above: "The fall of the Tang Dynasty was caused in great part by...

a) the invention of gunpowder

b) the imposition of heavy taxes

c) the doubling of the Chinese population

d) the restoration of the civil service system"

The answer is: B. The imposition of heavy taxes.

Hope this helps.