Complex sentence: The Atlantic City Special Improvement District (SID) was a nonprofit organization created in 1992, funded by a special assessment tax on businesses within the improvement district and carries out various activities to improve the city's business community, including street cleaning and promotional efforts.
Split into simpler sentences: The Atlantic City Special Improvement District (SID) was a nonprofit organization created in 1992, funded by a special assessment tax on businesses within the improvement district. It carried out various activities to improve the city's business community, including street cleaning and promotional efforts.