Final answer:
Crane and Barns acquired the manufacturing rights to the Fisk metallic coffin in 1848, marking a pivotal moment in the funeral industry for the preservation of bodies.
Step-by-step explanation:
In the context of American history, Crane and Barns acquired the manufacturing rights to the Fisk metallic coffin in the year 1848. This innovation marked a significant development in the funeral industry due to the Fisk metallic coffin's ability to better preserve bodies for transport and viewing. Almond Fisk, the inventor, patented his airtight coffin of cast or raised metal in 1848, and Crane and Barns were the manufacturers who gained the rights to produce these coffins.