Brit., from the German, appears preferable both to the unEnglish Kamerun and to the older and clumsy "the Cameroons."
2
The Cameroons are already bad-mouthing the truculent local party for conducting a dire campaign.
3
The English usage until nearly the end of the 19th century was to confine the term "the Cameroons" to the mountain range, and to speak of the estuary as the Cameroons river.