Based on the clue 'around 284 bc zenodotus of ephesus became the firs...', what is the answer?

What is associated with: around 2600 bc pharaoh djoser was entombed in a step one the first large stone structure? What is associated with: around 2700 bc thuban was the north star today this is the north star? Based on the clue 'around 274 bc this republic which later went full ...', what is the answer? What is associated with: around 2750 bc hannu an egyptian sailed down this sea reaching what is now ethiopia somalia? Based on the clue 'around 3 years on the bestseller list this book is...', what is the answer? Based on the clue 'around 300 ad christianitys main rival was the wor...', what is the answer? What is associated with: around 3000 bc it had 25 the value of gold but in 2002 it had about 175 golds value? What is associated with: around 30000 bc these hyphenated homo sapiens succeeded the neanderthals in europe?