Preparedness simply means "a state of readiness." Some synonyms that you could use include: readiness, alertness, or mobility. They all mean to be alert and ready, and can each be used in very similar context to one another.
I hope this helps you! Feel free to comment or PM me if you have any additional questions. Have a great day!
Paine says that it is irrational and absurd for such a huge amount of land with practically unlimited resources, to be dominated by such a small island. So basically he said that the argument lacks evidence and ethos