What is the most important factor in improving reading skills?

Central ideas are the most ideas in a text.

In this excerpt, paine is attempting to convince readers that they must support the war to protect their financial interests. could potentially benefit from the spoils of the war. will blame themselves for not supporting the war. have righteous reasons to justify supporting the war. mark this and return save and exit

When mrs. jameson says "it (the desert) won't leave you cold," what does she mean?