triple alliance = germany, italy, autria- hungary.
triple entente = fransya, rusya, britanya.
as an example, a diary from an immigrant from vietnam to the united states documenting her travel experiences from vietnam to orange county would be considered a primcary source for research on vietnamese immigration to orange county. however, a book written by a professor that analyzes the various writings of vietnam immigrants and interprets the experience of those immigrants is a secondary source for this research.
some examples of primary source formats include:
archives and manuscript material
photographs, audio recordings, video recordings, films
journals, letters and diaries
published books, newspapers and magazine clippings published at the time
records of organizations
autobiographies and memoirs
artifacts, e.g. clothing, costumes, furniture
research data, e.g. public opinion polls
ang matutulong nito ay malagaan ang ating bansa na kung saan mahirap ang bansa natin kaya hindi agad tayo yumayaman ang pera kasi ayy hindi yan hinihingi kun di pianagtratrabahuan!