Which of these is in the correct chronological order?

beginning of civilizations, paleolithic era, last ice age, neolithic revolution
last ice age, paleolithic era, neolithic revolution, beginning of civilizations
paleolithic era, last ice age, neolithic revolution, beginning of civilizations
paleolithic era, last ice age, beginning of civilizations, neolithic revolution

How is the city of savannah related to the union strategy of a full blockade of confederate ports? a) savannah was the last port needed to be secured in order to totally blockade the coast of georgia. b) savannah was the least significant city in georgia, and the union strategy centered on securing atlanta and capturing the tennessee river. c) savannah was the least significant city in georgia, and the union strategy centered on securing atlanta and capturing the chattahoochee river. d) savannah was the most significant port in georgia, and the union strategy centered on securing bases at savannah and the outlying islands to fully blockade georgia.