Question

the 14th amendment has continued to expand civil

Answer 1

They are the Civil War amendments. 13th Abolishes Slavery 14th Deals with citizenship and prevents former rebels from holding federal or state office without Congressional approval 15th Forbids the removal of the franchise on grounds of race (among other things)

The 13th, 14th, and 15th amendments are most often referred to as the "Reconstruction Amendments." They are all lumped together because they were passed during Reconstruction (immediately following the end of the Civil War) to end slavery and give former slaves some civil rights.
The 13th Amendment: officially ended slavery and prohibited it for the future.
The 14th Amendment: declared that former slaves were citizens and required that states provide everyone equal protection under the law.
The 15th Amendment: guaranteed voting rights for citizens regardless of race, color, or previous condition of servitude (meaning slavery).