It's the power of raising taxes what gives money its value.
"Variations of the modern-money narrative are found repeatedly throughout history. The levying of monetary taxes to create waged labor was “a nearly universal experience throughout Africa” in the colonial era, explains economist Randall Wray. Hut taxes, coupled with extreme violence and racial segregation, forced unwilling migrant laborers into the gold and diamond mines of South Africa. Bernard Magubane, an anthropologist, described the purpose of these taxes as being to “increase the economic pressure on the African peasants” to force them into waged work."
from: https://thenewinquiry.com/the-world-according-to-modern-mone...