Simplify the following text for a Grade 6 native English-speaking person.
Original: The East India Company ( also known as the East India Trading Company , English East India Company , and , after the Treaty of Union , the British East India Company ) was an early English joint-stock company that was formed initially for pursuing trade with the East Indies , but that ended up trading mainly with the Indian subcontinent and China .
Simplified: East India Company was a joint-stock company .