The empire got trade goods like spice, herbs, fabrics, rice, tea, opium was a huge export from India, especially into China which created huge revenue for the British Empire. They also came because they were building up there Empire and wanted wealth and the power that India would bring them.
Britain was looking to expand its empire; India was right there. The richest country in the world at that time, India had many exlusive resources that Britain decided to take advanteage of by conquering. They hoped to export and import goods and services between the two countries.
They saw great benefits in the resources available in India. Also, they recognized the fact that India was a major trade system in the world at that point. This interested the Britains greatly because they thought would become wealthy. While this was true (and happened), the citizens of India were very poor, and not wealthy AT ALL.
Because India was a the richest country in the world for agriculture, natural, raw resources and money. India had almost everything. And Britain just HAD to have it. But after almost a century in 1947 India got its independence and now is the second most greatest country in the world (first being USA, although America is failing economically).
Britain came to India in the search of natural resources which it found abundant in India. Britain took over India by means of entering as East India company in India. They entered in the subcontinent and analyzed the weaknesses of mughal emperors. Britishers were clever enough to take over the land of rich resources in the course of few years. They kept on expanding their territories and their grip on the rich areas. Britishers used this land for the procurement of raw materials at very low prices and selling back the refined finished good products at very high prices. Britain exploited this land for their own trade benefits and for the exploitation of raw materials.
They saw great benefits in gaining money, and also expansion of their country. They just saw it as an open window for resources and wealth, while the people who lived there suffered without much wealth. The british eventually gave up due to mahatmas gandhi.
India in 1700s and 1600s and before was the world's richest nation and really no one was near it! Indian population was in 1700s was about 200 million at that time india was a agriculture based state and old books even says that there was so much money in everyone's house, at that time there was no currency people exchanged normally eatables and by business(they exported eatables to other nations) they earned gold coins and the yield was so good that there was a large demand of indian goods. Some english sorces even says that people had so much gold that they used to weigh it not count it, it was like 200 pounds, 400 pounds etc.
So now you know everyone will want to get india!! At that time, they divided and ruled, britishers even had done wrong works by making a law of it, there was land execution act in which anyone's land can be executed and termed in under british government, there were taxations, you'll not believe there was almost 90% tax rate, means if I get a yield of 100 quintal, I had to give english 90 quintal. There was so much unjustice in all this!
India was rich in resources and the mughal emperors at the time controlling india were gullible and easily bribed all the brits had to do was give em some alcohol women and other things not found in india and they gained power and slowly took over india.
Britain gained an Empire in India because they wanted to trade goods with india such as cotton, silk, indigo dye, saltpetre, tea and opium .
British came to india in 1857 and left in 1947
They came to india mainly for trading their business and get out of india's rich raw materials.
India has never been a colony of britain. It was impossible for the britains to colonise india. They just took hold of the political power in partnership with some indian rulers. Then later on they brainwashed indians into thinking that they were inferior. Soon indians thought that britain was doing them a favour by ruling them. This was achieved through decades of brain washing.