How many weeks were kids under the age of 12 in school in the 1900s

The answer is 15 weeks.

Explanation:

They ranged from untidy to absolutley filthy, according to a study in 1917. In 1900, 78% of all children were enrolled in American Schools; By 1910 the percentage had increased only slightly to 79%. In 1905 the average school term lasted 151 days, to which the average student attended 105 days. And 105 divided by 7 is 15.

they had many gains 1 one freedom for slaves the major cause of the civil war is that the   north wanted freedom for slaves but the south didn; t creaitng the civil war

another gain they have is poltiical influence

poltiical influence is a big thing everywhere even now peoplle are always trying to get the head up in poltics thats what they did by giving the republicians a good name for freeing slaves