"The Golden Age" how did it come about? I believe it came about just as did the time right after World War II. The American Revolution was over and time had eased the pain and suffering from the War. People were free to spend their money on themselves instead of supporting Independance.
We all have either experanced or been told about the hardships before and during WWII. I believe it was even greater during the American Revolution period. Most of us remember how great it was for workers in the 50's and 60's compared to now.
After the Revolution, America was on it's own and feared that it could still be taken over by some other country. France, Spain, Germany and other countries wanted what England had lost. These countries were established manufacturing worlds that had already offered goods to us but England had mostly stopped their shipments to us. Now the America was open to them without restrictions for now. Later restrictions were placed as tariffs to support Northern Industry.
Barrels, locks, tools, and all esentials that most blacksmiths weren't set up to make cheeply became readly available. Manufacturing began to expand like never before in the Northeastern States. With the expansion SOME people were able to purchase their dreams. Women could buy materials for a new dress or finally put drapes over the windows instead of shutters.
Men would evenutally buy a new buggy, wagon or farm equipment to expand their crops. With the War over people were able to get back to work instead of serving their Colony. With all this growth the sons of large farmers, bankers, businessmen, Railroad men could buy with thier wages a fine rifle just as our kids have done in buying a fancy camaro, firebird, mustang, etc. Also there use to be a tradition of giving either a fine gold watch or a fancy rifle at retirement for that long trusted employee.
With women working outside the household it gave families more money for the things they needed and wanted. Old Dad could finally purchase a new gun to replace the well used one that he had traded for or bought for self defence and hunting. He was finally able to fill the dream of owning the Cadillac of his dreams. Others would purchase a fine gun to replace the one they had abused so badly fighting for their independance...by now it would have been repaired several times to the point it was better to replace than keep patching.
This is just a different viewpoint.