Indo-European copula copula (with corresponding voiceless and voiced fricatives) existed side by side in Germanic, and the involvement of a separate root "" is unnecessary. The root "*(s)teh-" meant "to stand". From this root comes the present stem of the so-called "substantive verb" in Irish and Scottish Gaelic, "tá" and "tha" respectively. On the absence of the initial s- in Celtic, see Indo-European s-mobile. In Latin, "stō, stare" retained the meaning "to stand", until local forms of Vulgar Latin began to use it as a copula in certain circumstances. Today, this survives in that several Romance languages (Galician-Portuguese, Spanish, Catalan) use it
European influence in Afghanistan established foundations for Afghan neutrality. The convention provided for Russian acquiescence that Afghanistan was now outside this sphere of influence, and for Russia to consult directly with Britain on matters relating to Russian-Afghan relations. Britain, for its part, would not occupy or annex Afghan territory, or interfere in Afghanistan's internal affairs. During World War I, Afghanistan remained neutral despite pressure to support Turkey when its sultan proclaimed his nation's participation in what it considered a holy war. Habibullah did, however, entertain an Indo-German–Turkish mission in Kabul in 1915 that had as its titular head the Indian nationalist Mahendra Pratap and