It kept the church from gaining to much power and the govt from gaining too much power it went both ways to cause neutral power between the two.
Primarily through their impact on demand. Tax cuts boost demand by increasing disposable income and by encouraging businesses to hire and invest more. Tax increases do the reverse. These demand effects can be substantial when the economy is weak but smaller when it is operating near capacity.
I remember the artifact being the Rosetta stone, it had the language that they spoke, Greek, and it had Hieroglyphs.