Primary sources are things that come from persons directly involved in the events or lives being studied. So, let's say World War II is our subject. Any diary entries or letters (like the diary of Anne Frank or a letter by a soldier) would count as primary sources. So would any official proclamations or letters or government documents -- such as the Constitution of France or a declaration of war by US Congress.
Secondary sources are written by historians or others after their study of primary sources.
<span>Primary sources are first-hand accounts of a topic while secondary sources are any account of something that is not a primary source. Published research, newspaper articles, and other media are typical secondary sources. Secondary sources can, however, cite both primary sources and secondary sources. </span><span> Hope this helps :) :)</span>
Deltas with this triangular or fan shape are called arcuate (arc-like) deltas. The Nile River forms an arcuate delta as it empties into the Mediterranean Sea.
Karl Marx proposed communism as a solution to the problems created by the Industrial Revolution in his work The Communist Manifesto, along with Friedrich Engels.
