How did early christians explain their beliefs and teachings?

Japan  sided with the  entente powers  in wwi because it was a great opportunity to pick off germany's colonies in the pacific free of charge.

The following passage describes an example of __negative externality in the 1980s, manufacturing power plants in the midwest burned coal with high sulfur content, which when released as smoke, mixed with moisture in the atmosphere to create an acid that blew into canada and new england. the acid fell to the earth in the form of rain, killing fish and causing deforestation and building deterioration.