Rations

Many countries of Africa keep their foreign reserves, and conduct their international trade in the USA currency, the dollar. There are indications that the economy of that country is in deep trouble and that its currency may be severely depreciated. Consider this statement to the USA Congress arm of government.
What would happen to your dollar-ised money if the USA goes into depression?
The value of your wealth will be much reduced. You may be unable to get cash out of the banks. The price of everyday consumables will go up very sharply. These events will trigger a massive transfer of wealth from you to those who sell the things you want to buy.

First, prepare your family, now, by stocking up on some essentials:

Dried / smoked fish or Cans of Fish
Bags of Nuts especially Groundnut due to high protein content
Bags of Rice
Red Palm Oil (it is very stable at room temperature)
Bags of Dehydrated fruits put them in a glass jar, cover with nylon and screw down the lid)
Boxes of Cereals like Coco pops which you can eat straight out the box
Batteries
Radios (preferably wind up)
Matches/lighters
Candles
Torches (preferably wind up)
Hot water bottles
Wood
Paper
Pens and Pencils
Soaps
Washing powders
Washing up liquids
Toilet Paper
Blankets
Fire Kettles
Bottled fuel
Bottled Stoves
Medications/Herbs/supplements
Toothpaste
Camping burners/stoves & spare gas bottles
Bottled Water (try to get a British Berkefield "gravity water filter" system)

Second, Secure your water supply
Make Your Own Water Filter: Using What's Available Is All It Takes
By Tony Cunningham

It is possible to make your own water filter and turn dirty and contaminated water into clean and pure drinking water by sending the water through many layers that help in filtering out the contained impurities and such a system is much like what tap water goes through at a treatment station.

A Couple Of Simple Methods

You do not need much to make your own water filter, and a two liter plastic pop bottle and lid, straw, cotton batting, gravel, sand, coffee filter as well as jar along with (of course) muddy water will do. You will then have to take a few steps to make your own water filter which include cutting the bottom of the pop bottle, placing into it a layer of cotton batting and layers of fine grain sand, large grain sand as well as small and large gravel, cutting the coffee filter to fit the top of the bottle, and placing this on top of the gravel. Finally, you need to pour the muddy water into the open end of the bottle and allow the water to seep down the filter layers.

Following these simple steps will allow anyone to make their own water filter. To make doubly sure that the water is properly filtered, you may add four to eight drops of chlorine to each gallon of filtered water.

There is even more sophisticated means to making your own water filter, and it is doubly important in case you only have access to dirty and muddy water which per force you need to drink. This may happen when you are out camping, or in a place where there is no filtered water available for drinking.

When you do make your own water filter, you will undoubtedly be removing just the “visible” portion of the contaminants. This is a small though good beginning, and there are a number of different and easy ways to go about the business of filtering water without needing to purchase a water filter.

All you really need is to use things that are readily available including a container that should have five to ten holes punched at the bottom. Fill the container with layers of sand and gravel from the bottom all the way to the top. Collect enough water and the pour it through the filter, and catch the ‘filtered' water in another container at the bottom. In case the water does not look clean, you may have to pour it once again, or as many times as is necessary for it to turn clear.

Third, take your USD dollars and buy a farm, well away from any "urban" areas.
Fourth, arm your self for protection and hunting. There will be many wild-life after the start of the next world war.