What contributions has the introduction of cryptocurrency made to the world economy. Many countries mostly in the African region has banned activities involving cryptocurrency while some have legalized it's use.
Africa is trying it best on the Crypto adoption. If I have to remind you, Central Africa Republic has adopted Bitcoin for it legal tender following El Salvador and Nigeria is rated 6 position in the global adoption.
If we have to talk about it effects on the economy then I will say it is not going to be obvious because it is a on-chain market structure that investing on it does not prioritize on generating public funds and as a result that the market is not a regulating revenues to determine its economy effect in the states level.
Perhaps you can justify this based on adoption rate since it is a decentlized market. In other words, Bitcoin has been effective in the economy in that users can send money across the borders with low fee rate and has as well positioned a store of value for less privileges who does not have enough funds or opportunity to invest on gold in other to back up their funds against the economy inflations.