5 Most Powerful Countries Ruling the World in 2050

4. United Kingdom

Projected GDP (PPP) in 2050: $5.37 trillion

Forecasted Defense Expenditure in 2050: $92.57 billion

Technological Capabilities Rank: 4

Score: 0.843

The United Kingdom will continue to remain a major global power in 2050, due to its strong and robust economy, with technological advancement being one of its key strengths. The country spent $68.46 billion on defense in 2022. It is projected that this figure will continue to climb over the coming two decades. The UK boasts a strong military armed with nuclear weapons and advanced fighter jets.