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

Civilisations are thought to have emerged at the end of the neolithic revolution, so it will definitely be:

Neolithic Revolution
beginning of civilizations,

Further, paleolithic happened before neolithic , so we have:

Paleolithic era,
Neolithic Revolution
beginning of civilizations,

Last Ice age ended 12 000 years ago - around the time when Neolithic revolution started.
So the final order is:

Paleolithic era,
last Ice Age,
Neolithic Revolution
beginning of civilizations,

A. southerners underestimated republicans eagerness to end slavery.