How much is a billion in US, UK, Europe? Is there a difference?

How much is a billion in US, UK and Europe?

Is there a difference in the meaning of billion?

Yes there is a difference in the meaning of billion.

In the US, 1 billion is 1 thousand million = 1 000 000 000
In the most countries in Europe, 1 billion is 1 million million = 1 000 000 000 000
In the UK, 1 billion is officially 1 thousand million = 1 000 000 000, but historically 1 billion was 1 million million.

Billion in the most European countries is called Trillion in US.

In the US 1 Trillion is 1,000,000,000,000

In the most Europe countries 1 Trillion is 1,000,000,000,000,000,000