What is this? Green box under dash wiring???

076B180A-9509-4DB1-9D82-08418925036A.jpeg 83C18304-4C00-45C9-A7A8-AD57822F9949.jpeg 4E22065C-BA69-4B2B-93C6-C7E860BE0CD1.jpeg Looking for more help to figure out what this green electrical box is under the dash of my 1974 dodge dart sport?
Wanting to see if it is a necessity or if it is something that can be done away with… this is a later model vehicle then I have ever worked on Prior so I am not familiar with what it is exactly or what it does.
As always, thank you in advance!