Supplies going to soldiers meant that there were shortages on the _

The correct answer is the homefront.

As a result of the majority of supplies going to soldiers, there were significant shortages on the homefront. This pushed the home front to develop new movements such as victory gardens, wherein people would grow their own vegetables to allow mass produced food to go to soldiers.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)