Answer:
The United Kingdom
Step-by-step explanation:
Britain colonized India where it became the British Raj from 1858 till 1947, where the Kingdom split into India, Bangladesh, Pakistan, and Myanmar. The Raj was known as the "crown jewel" of the British Empire due to its vast and rich resources and strategic importance for war and trade.
In 1788, the British Empire colonized Australia in which the first decade estimates range that nearly 90% of the natives were wiped out. After British settlement onto Australia, it was integrated into the British Empire as a Dominion.
In 1841, the British took Hong Kong, where it could establish a large trading port and increase trade influence in the region. Due to China's vast resources, having close proximity to China was crucial to the Empire. It would later be handed back to China as an administrative region in 1997, which was the nail in the coffin of Britain's colonial empire.