sentence: Roughly, 4 years later in the year 1805, Royal Arsenal came up with their first Congreve rocket only due to the Technology devised by Haider Ali and his son Tipu Sultan.
modified: fix grammar: Roughly, 4 years later in the year 1805, Royal Arsenal came up with their first Congreve rocket only due for the Technology devised by Haider Ali and his son Tipu Sultan.