The currencies of the world are affected by many different parameters such as politics, economy, wars. The value of the money also shows up and down according to these parameters.
What are the parameters that affect bitcoin?
Because such currency is centralized, which means everything factors about the country/government also van affect the currency market.
Bitcoin is different because it's decentralized, and otherwise bitcoin comes when the country have bad economic system, such Venezuela recently.
Also like other currency bitcoin influences by demand and supply, but because the supply is limited, it's could be manipulate by whales/dinosaurs (people who have a lot coins / people who already mined bitcoin & have a lot coins).
As you said yes, bitcoin is not influenced by the current political structure of the world because it is not a central system. Bitcoin is only valued according to people's demands and is affected positively or negatively by the news about bitcoin. There are also very few people who use bitcoin when we look around the globe. Bitcoin is somewhat independent of the world economy.