What were the four stages of impact on humans from the nuclear detonation?

1)1-9 weeks are the most deaths due to thermal injury and blast effects and as well as radiation exposure
2)10-20 weeks deaths due to ionizing radiation 
3)13-20 weeks some improvement in survivors health condition 
4)20+weeks survivors may be subjected to radiation cancer 

The Gadsden Purchase

Explanation: The Gadsden Purchase completed the outer border of the United States. (I am not sure if it is asking about outer border or inner borders too, such as states)