Most of the biowarfare research using viruses which causes Aids and Ebola was predominantly carried out in Germany and Japan until 1945 and since then mainly in the USA and France, using Nazi and Japanese (military) scientific war criminals. The Revealing Voices of Aids/HIV Theory Dissidents.
copula - an equating verb (such as `be' or `become') that links the subject with the complement of a sentence. copulative, linking verb. verb - a content word that denotes an action, occurrence, or state of existence.
Copula (linguistics) The word copula derives from the Latin noun for a link or tie that connects two different things. A copula is often a verb or a verb-like word, though this is not universally the case. A verb that is a copula is sometimes called a copulative or copular verb. In English primary education grammar courses, a copula is often called a linking verb.