The OPEC also known as the Organization of Arab Petroleum Exporting Countries proclaimed an oil embargo in the 1972. This was a result of US' support for the Israel during the Yom Kippur War. The embargo caused oil prices to rise fro dollars a barrel to near 12 dollars globally. It gave rise for US to develop its own oil generating capacity to sustain its energy sources.
The first photograph or the earliest was taken or invented 1826/1827
Marx and Engels begin The Communist Manifesto with "A spectre is haunting Europe" because they wanted to warn the bourgeoisie and the elite class that their movement is strong and it is not going to stop until Europe is classless. Literary effect: the movement is mainstream. Political effect: the movement is powerful.
gathering data on how many veterans lack proper health care and publicizing it on social media