Jewel in the Crown is an expression used to refer to India which metaphorically was the "jewel in the crown" i.e. the most important part of the crown, in this case India was the most important part of the British Empire.
englands queen is a theif they robbed the indian jewels, these are know known as the crown jewels
The British viewed India as the jewels in the crown because India was populous and wealthy and contributed a lot to the to the British treasury through taxes and providing the British Empire with a ready market for their opium, cotton, and spices.
It was known as the British Empire. When the empire started to fall apart, the British Commonwealth/Commonwealth of Nations was created.
No country was known as British East Africa.
The founder of the British Empire came to be known in 1603 to 1949 and was founded by King James. The British Empire lasted 346 years. It was the largest Empire in history.
japan
The Commonwealth Games were known as the British Empire Games in 1930.
The Sassanid Empire was centered in the country now known as Iran.
The Buganda Empire is known as Buganda today. It is located in the heart of Africa in country known today as Uganda. Buganda is in the south-central region of the country.
The 50 plus countries that were originally part of the British Empire, started to become independent from the late 1940's onwards and then became known as the British Commonwealth. That term is now obsolete and they are now known as the Commonwealth of Nations.
There have been a few different Self-governing colonies in the British Empire. One that comes to mind is Southern Rhodesia, known today as Zimbabwe.