Complex sentence: Joao Candido was stationed in Newcastle-Upon-Tyne in England for two years during the construction of the dreadnought, and it was while experiencing the living conditions and increased freedoms of Newcastle that Felisberto realised how unacceptable conditions in the Brazilian Navy were.
Split into simpler sentences: Joao Candido was stationed in Newcastle-Upon-Tyne for two years for the building of the dreadnought. It was while experiencing the better living conditions and increased freedoms of Newcastle that Felisberto realised how unacceptable conditions in the Brazilian Navy were.