Looking at the plot from 1960s onwards, we can see that all the North African countries in subject have a similar trend of inflation. Egypt and Algeria clearly have higher inflation rate in the 1980s and 1990s respectively. The main conclusion, knowing a little bit of history, is that the 6th October war in Egypt in early 1970s have had a definite effect on the rise in inflation while the Algerian Civil war in the 1990s was also a contributor to the spike in inflation as well.
With that said, Both Egypt and Algeria do control their inflation rate to decrease it in the late 1990s and early 2000s. However, Egypt bounces back again in an increasing inflation rate from the early 2000s up until 2010 where it spikes.