Milk was sold in bottles and people had milkmen deliver milk every morning. The milk came with the cream on top that had to be taken off when used. Milkmen were still delivering milk and other things as late as the 1960's.
the radio was not invented in the 1920s, but it came out in the 1920s when people could buy them
It is neither. Cows and the people who produce milk are called producers. The consumers buy the milk.
The people who have cows which make milk send the milk to factories to pack it up and then the factories send it to shops and the people who work in the shop sell it and people buy it.
developing expanded markets of people to buy their products.
Dairy farmers, people whom sell milk, people whom buy milk, people whom drink milk, but above all, COWS.
"Got milk?" is an advertising slogan reminding people to buy milk by implying that it is a necessity everyone should have on hand.
You can not buy dolphin milk.
how did people reveal distrust of others in the 1920s?
Well, sometimes people buy a gallon of milk!
Cows make milk and their babies can drink them too.
In 1895, most people had their own cows or goats for milk. For those who had to buy milk, it typically cost around $0.10 in 1895.
You can buy milk creates directly from manufacturer here: www.milkcratesdirect.com