They didn't, they used gas which was against international law.
The Mothers of Plaza de Mayo is an Argentine association formed during the dictatorship of Jorge Rafael Videla in order to recover the disappeared detainees alive, and then establish who was responsible for the crimes against humanity and promote their prosecution.
When they started the marches around the May Pyramid, symbol of freedom. To recognize themselves, they began to use a white headscarf <u><em>originally made with cloth from the diapers that were used for babies, thus representing the children.</em></u> That handkerchief became his symbol. The Mothers tried to make known their dramas and thus participated in numerous and popular religious marches in which it was convenient that they could recognize themselves.
I'm pretty sure it was the Julian calendar so Julius Caesar
A ethiopia was the first African continent to become independent
