A book called The Histories uses research to determine the causes of the Greco-Persian Wars. It was written by the ancient Greek historian Herodotus around 440 BCE. Is that a primary source or secondary source

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A book called "The Histories" uses research to determine the causes of the Greco-Persian Wars. It was written by the ancient Greek historian Herodotus around 440 BCE. It is a primary source because historian Herodotus was born in 485 BCE, in the Greek city of Halicarnassus, in a time were the Persians had invaded that place and was ruled by Lygdamis, a Persian governor. So Herodotus lived in the times of the Greco-Persian wars and witnessed some events of the war that started in 492BCE and ended in 448.

Primary sources include testimonies, scriptures, or information form witnesses or people who lived during the historical event. Secondary resources are the ones written by researchers that later wrote a book, journals, or encyclopedias.

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.

the progressive era is a period of widespread social activism and political reform across the united states that spanned from the 1890s to the 1920s.[1] the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.

the movement primarily targeted political machines and their bosses. by taking down these corrupt representatives in office, a further means of direct democracy would be established. they also sought regulation of monopolies (trust busting) and corporations through antitrust laws, which were seen as a way to promote equal competition for the advantage of legitimate competitors.

many progressives supported prohibition of alcoholic beverages, ostensibly to destroy the political power of local bosses based in saloons, but others out of a religious motivation. at the same time, women's suffrage was promoted to bring a "purer" female vote into the arena.a third theme was building an efficiency movement in every sector that could identify old ways that needed modernizing, and bring to bear scientific, medical and engineering solutions; a key part of the efficiency movement was scientific management, or "taylorism".

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