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The timeline can be navigated with the “Scroll Left” and “Scroll Right” buttons or by dragging the pointer to a date on the timeline waveform (located at the bottom of the screen on the desktop version and on the left of the screen on mobile). To filter by a particular topic and see a smaller section of the data, make a selection on the dropdown “Filters” menu or click “Search” to do a keyword search. Hover over the abbreviated filter tags in the blue boxes to see the complete name of the filter, or click a filter to display all the data with this tag. If you want to take a deeper dive into a specific topic by viewing a narrative essay page and a curated timeline, click on “Stories.”

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During World War II, the U.S. releases the "Basic 7" food groups that should guide a healthy diet.

1943

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The seven food groups are: green and yellow vegetables; oranges, tomatoes, grapefruit; potatoes and other vegetables and fruits; milk and dairy products; meat, poultry, fish, or eggs; bread, flour, and cereals; and butter and fortified margarine.