“the result of that war {mexican war} was lamentable not only for our country but also lamentable for the reputation of the americans. the despoliation which we suffered was qualified as a real robbery even by citizens of that [wars] cost, also, much bloodshed which, when poured out in order to serve injustice and oppression, does not pay at all, for it does not even receive the applause of history." –mexican history textbook

identify a likely point of bias in the source material quoted above.

..."order to serve injustice and oppression, does not pay at all, for it does not even receive the applause of history."

This point qualifies as a biased source material. The Mexican History author distillate his own perspective about the outcome of the war. Judging by his declaration of Mexican heritage, (... not only for our country...) the author gives a very uncomfortable, and furious opinion about the American action during this war, and in the end makes a huge generalization about the viewpoint of other authors about this war. Mexican War resulted from the Annexation of Texas, declared by a joint resolution of Congress  in 1845, infuriated Mexico. The newly elected president, James K. Polk, sought  to acquire California and New Mexico as well as Texas, but negotiations soon  failed. When Mexican troops crossed the Rio Grande, Polk urged Congress to  declare war.

where is the picture of the graph or table?

1960: wilma rudolph was the first woman to win three olympic gold medals in track and field at one olympic games. she was an american sprinter from tennessee, she was acclaimed the fastest woman in the world. she was among the most visible black women in america and abroad. she became a role model for black and female athletes. she was also known as a civil rights and women right's pioneer.

1973: billy jean king is an american former number one tennis player. she represented the united states in the federal cup and the wightman cup. for three years she was the usa's captain in the federation cup. she defends gender equality and has been a pioneer for equal and social justice. at the age of 29, she won "the battle of sexes" tennis match against the 55 year old bobby riggs. she was also the founder of women's tennis association and the women's sports foundation.  

1983: tamara mckinney becomes the first american female skier to win the alpine world cup overall championship top. she was the only american to hold that title for a quarter century until 2008.

1992: manon rhéaume, from canada,   becomes the only woman to start in a national hockey league game in an exhibition game for the tampa bay lightning . she played on the canada women's national ice hockey team winning gold medals in 1992 and 1994. and silver medals in 1998. manon marked the first time a woman appeared in a regular season professional game with her first appearance against the salt lake golden eagles.

2013: serena williams won 78 of 82 matches at the age of 31. she is an american professional tennis player. she reached the number 1 ranking for the first time on july, 8, 2002. at the age of 16, she played against karsten braasch the battle of sexes. she was the highest paid female athlete in 2016. she is a unicef ambassador .