Gumawa ng isang liham na tutugon sa sulat ng nanay at tatay sa Gawain sa Pagkatuto Bilang 4. Ilagay sa liham ang iyong naiisip
at nadarama patungkol sa mga konseptong nabanggit.

other sources of text

explanation:

this can be magazines, news reports, scholarly articles, textbooks, research papers etc.

united kingdom

portugal

france

germany

i believe it would influence their own way of understanding things. it shall be a foundation where they can draw or start an argument.   historians are also  scientists that  have their tools of analysis and expertise to unlock a variety of difficulties such as relationships of man, origin, politics, economy, and culture. based on facts and understanding on these areas, they may shade light to extract ideas and develop options to validate a hypothesis or debunk it.