Primary sources may be objects (artifacts, tools, weapons, inventions, fashions, uniforms), images (photographs, film, video), audio (oral histories, music, interviews, speeches,) or documents (books, letters, journals, diaries).
A primary source gives you direct access to the subject of your research. Secondary sources provide second-hand information and commentary from other researchers. Examples include journal articles, reviews, and academic books. A secondary source describes, interprets, or synthesizes primary sources.
In ancient Greece, the philosopher Aristotle "invented a method of argument that used logic", since this became the most persuasive form of argument, known now as Aristotelian logic.
The major advantage that the steam boat had over other vessels was that it could travel for a longer distance at the shortest possible time. It did not have to wait for the wind direction and speed. The steam boats could also travel against the current very easily. The steamboats resulted in the increase in trade.
this monarchy is similar to what we see in america to be a democracy the president and king have final say on laws and taxes although both can be overruled by the masses