The north had a better arsenal, seeing that they were more industrial than the south. They also had more soldiers, because they used african Americans as soldiers, as well as northern colonists. They also had better military coordination, being led under better military strategists than the south, such as Abe Lincoln. All of these factors helped the Union army win the war.
The north had more peolpe... if you got drafted and your family had money you could pay somebody else to be you... and they had more weapons but they were reckless with there people and resource es since they had so many.... if it would not have been for the andaconda planand Sherman's march the south could have won becoyse untill that the north was about to give up and give in (south will always win in my book becoyze they wore the underdogs and still hung with the big dogs loll)