Complex sentence: This expulsion order, combined with the growing threat of arrest or exile of its writers forced the NRZ to publish its last issue on 19 May 1849, known as the "red issue" as it was printed entirely in red ink.
Split into simpler sentences: This expulsion order, combined with the growing threat of arrest or exile of its writers forced the NRZ to publish its last issue on 19 May 1849. This so-called "red issue" as it was printed entirely in red ink.