US Factories were NOT bombed by the enemy during WW2.
During World War I, the federal Department of Labor ensured there were enough workers to make necessary supplies for American troops.
Seed Slitter and plows are common garden supplies that are necessary to start a new garden. You can read more at http://www.gardenguides.com/garden-supplies/
You get the necessary supplies and then sew them together. The supplies include patterns, needle, thread, and cloth.
Supplies were limited. In order to fairly distribute the items in short supply, rationing was introduced. That prevented prices from going too high and the rich from being able to corner the market on goods. It help make sure that the troops had the things that they needed to fight.
The civilians sold the supplies to the government and the government gave them money for the supplies.
Government tenders are posted government jobs or projects. When the government has a job they want done or they need services or supplies, they request contractors to bid on the work, services, or supplies.
Rosie the Riveter was the lady on the posters the government used to encourage women to work factory jobs. These jobs were necessary to produce the supplies the war needed.
No, medical supplies are needed to be paid for. But, you can get charity and donations for your medical supply if you feel necessary.
it increases their food supplies it is also necessary to stop crops from being dry.
HP printer supplies are not always necessary for optimum use. However, some printers may reject knock off brands
The Continental army had the hardest time finding supplies during the American Revolution.
Well, since you didn't tell us what "these supplies" were or where "the trip" might be, we can only say "because they are needed."