Answer:
The combined number of neutrons and protons
Explanation:
The mass number of sodium is 22.99 which shows the number of neutrons and protons.
In general this idea was a success since Kansas became a "normal" state in the union that practiced and promoted the principles of popular sovereignty, although there were many hurdles to be faced. <span />
<span>Expansion efforts originated in the city of Medina. This is true because it is the area on the map that is shaded the darkest, indication that it was conquered by A.D 637</span>
The correct answer is b and d