<Ul> <Li> Preamble and Articles I--VII </Li> <Li> Amendments I--X </Li> </Ul> <Li> Preamble and Articles I--VII </Li> <Li> Amendments I--X </Li> <Ul> <Li> Amendments XI--XXVII </Li> <Li> Unratified Amendments </Li> </Ul>

What was the name of the 14 year period that began with the eighteenth amendment