What is referred to by 'a 300 year anniversary'?

Based on the clue 'a 3 time league mvp this former phillie hit a care...', what is the answer? Based on the clue 'a 3 time us champion michael weiss is the first am...', what is the answer? Based on the clue 'a 3 year old chestnut colt named aristides won the...', what is the answer? Based on the clue 'a 300 pounder contains 54 pounds of this building ...', what is the answer? Based on the clue 'a 31 foot high statue of this mythical lumberjack ...', what is the answer? Based on the clue 'a 32 ounce soft drink at 7 eleven has this tradema...', what is the answer? What is associated with: a 32 room 14 bathroom mansion at 518 crestview drive in 90210 land? Based on the clue 'a 32 year old actress pretending to be 19 got a jo...', what is the answer?