Simplify the following text for a Grade 8 native English-speaking person.
Original: When protests against the militarisation by the Nawab of Bengal Siraj-Ud-Daulah went unheeded he attacked and captured Fort William , leading to the infamous Black Hole of Calcutta incident .
Simplified: When this was protested , the Nawab of Bengal Siraj-Ud-Daulah attacked and captured Fort William . This led to the infamous Black Hole incident .