To many people, especially in the north, they would be fighting the war to

promote the fugitive slave law
stop immigration
keep the union intact
stop the slave trade from africa

Option C.

Explanation:

Keep the Union intact, is the right answer.

Throughout the American Civil War that began in the year 1861 and came to an end in 1865. the North (or the Union) was used to refer to the U.S.A. and particularly the government of Abraham Lincoln and those twenty free states and 4 frontier and slave states that gave support to it. On the other hand, those states that opposed this union were known as the Confederate States of America. However, most of the people from North asserted that they were fighting to keep the Union intact

the united states presidential election of 1844 was the 15th quadrennial presidential election, held from november 1, to december 4, 1844. democrat james k. polk defeated whig henry clay in a close contest that turned on the controversial issues of slavery and the annexation of the republic of texas.