Answer:
The issues of emancipation and military service were intertwined from the onset of the Civil War. News from Fort Sumter set off a rush by free black men to enlist in U.S. military units. They were turned away, however, because a Federal law dating from 1792 barred Negroes from bearing arms for the U.S. army (although they had served in the American Revolution and in the War of 1812). In Boston disappointed would-be volunteers met and passed a resolution requesting that the Government modify its laws to permit their enlistment.
The Lincoln administration wrestled with the idea of authorizing the recruitment of black troops, concerned that such a move would prompt the border states to secede. When Gen. John C. Frémont (photo citation: 111-B-3756) in Missouri and Gen. David Hunter (photo citation: 111-B-3580) in South Carolina issued proclamations that emancipated slaves in their military regions and permitted them to enlist, their superiors sternly revoked their orders. By mid-1862, however, the escalating number of former slaves (contrabands), the declining number of white volunteers, and the increasingly pressing personnel needs of the Union Army pushed the Government into reconsidering the ban.
Explanation:
 
        
             
        
        
        
I wish the author would have answered , In what way do the cell phones for soldiers particpants help military families?  Another question is, How did these teens get their start in these programs?
weak verbs: help is overused and could be replaced with aid. serve could be replaced with contribute, share could be replaced with  experience
        
             
        
        
        
Implications in an essay means what can be drawn from that essay...what was is basically about.