The Sikhs reacted violently to persecution, and the Marathas spread to Orissa, after which, in the year 1739, Nadir Shah of Persia invaded and carried off the Peacock Throne (broken up after his assassination).
( ( ( ( ( ( The Sikhs ) ( ( reacted violently ) ( to persecution ) ) ) , ) and ) ( ( the Marathas ) ( spread ( to ( ( ( Orissa , ) ( ( after which ) ( ( , ( ( in ( the ( year 1739 ) ) ) , ) ) ( ( ( Nadir Shah ) ( of Persia ) ) ( ( ( ( invaded and ) carried ) off ) ( the ( Peacock Throne ) ) ) ) ) ) ) ( -LRB- ( ( ( broken up ) ( after ( his assassination ) ) ) -RRB- ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (NNPS Sikhs)) (VP (VBD reacted) (ADVP (RB violently)) (PP (TO to) (NP (NN persecution))))) (, ,) (CC and) (S (NP (DT the) (NNPS Marathas)) (VP (VBN spread) (PP (TO to) (NP (NP (NP (NNP Orissa)) (, ,) (SBAR (WHPP (IN after) (WHNP (WDT which))) (S (PRN (, ,) (PP (IN in) (NP (DT the) (NN year) (CD 1739))) (, ,)) (NP (NP (NNP Nadir) (NNP Shah)) (PP (IN of) (NP (NNP Persia)))) (VP (VBD invaded) (CC and) (VBD carried) (PRT (RP off)) (NP (DT the) (NNP Peacock) (NNP Throne)))))) (PRN (-LRB- -LRB-) (VP (VBN broken) (PRT (RP up)) (PP (IN after) (NP (PRP$ his) (NN assassination)))) (-RRB- -RRB-)))))) (. .)))
The Sikhs were a minority group in the area.
( ( The Sikhs ) ( ( were ( ( a ( minority group ) ) ( in ( the area ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNPS Sikhs)) (VP (VBD were) (NP (NP (DT a) (NN minority) (NN group)) (PP (IN in) (NP (DT the) (NN area))))) (. .)))