Most of them had no choice because they were conquered militarily.
1878
All non British, countries, colonies, territories or protectorates were not part of the British Empire.
About 50 countries were part of the British Empire. The rest of today's modern countries either didn't exist at the time or were in a different Empire. Some were even independent.
The British Empire ruled more than a third of the world.
india
Scotland, Ireland Wales.
In reality, Bermuda did not actually choose to join the British Empire. They islands were forced to join or be conquered.
The U S A never joined the British Empire.
It didn't the US was formed when it revolted against the British Empire
1894
1878
Argentina, Chile and Peru were never in the British Empire
The British Empire no longer exists.
Canada didnt join it was fought over by the French and British in which the Brits ended up winning therefore becoming part of her empire.
They were all part of the British Empire
All non British, countries, colonies, territories or protectorates were not part of the British Empire.
1964