Quiz of the Day - 19 June 2012

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Let's go back to some visual/pictorial quiz questions for the Daily Quiz series.
daily quiz
On the right hand side, you can see the scanned copy of an old map, which was used for depicting an event that went on to define the course of history. Today's question is based on this event only.
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You'll have to identify the event, being depicted through the map and have to tell us how this went on to alter the course of history.
daily quiz answer
You can leave your responses as comments to the post. The comments will be moderated for a period of 24 hours. Alternatively, you can also mail your answer to shovon76[at]gmail[dot]com. The answer, along with the names of the persons with the right answer, will be published tomorrow.

Cheers!
daily question answer
Answer: Its the answer time. Both Anindya and Aniruddha were pretty close to the answer, but just missed by a whisker!
The answer is Battle of Plassey. This map shows the Battle Plan and Troop Deployment Plan for the Battle of Plassey.
daily quiz question answer
This 1757 war between Siraj ud-Daulah and the forces of the British East India Company, led by Sir Robert Clive resulted in a decisive British East India Company victory over the Nawab of Bengal and his French allies, establishing Company rule in South Asia which expanded over much of the Indies for the next hundred years. The battle took place at Palashi, Bengal (Plassey is the anglicised version of Palashi), on the river banks of the Bhagirathi River (shown in the map as Cassembuzar River), about 150 km north of Calcutta, near Murshidabad, then capital of undivided Bengal.