What is a personal history or source of pride to you?
Family traditions and cultural traditions can be source of pride in many cultures. An established, purportedly correct way of doing things engenders unity among likeminded people.
"Pride" is superbia, with the source of pride in the genitive; thus "pride in your work" is superbia operis tui (or operis vestri if "you" is plural). The verb "to take pride" is superbiare, with the source of pride in the ablative; thus "to take pride in your work" is superibiare opere tuo (or opere vestro). If a specific reference to the person(s) spoken to is not intended, then possibly superbia operis sui; superbiare opere…
What if true would suggest that the historian's document is a strong source of evidence for historical interpretation?
Undoubtedly the historian's document is a positive and strong source of evidence for historical interpretation provided it is not affected by personal prejudices, selfish national interests or affiliations. History is seldom honest. Mostly it has been mis-interpreted and distorted because of certain vested interests - may be it be the history of Aryans, Greek, Roman or American History
How does Achebe's portrayal of Okonkwo's family relationships make Okonkwo a sympathetic and unsympathetic character?
"Your history" can mean: your personal and family history, like when you were born; parents' names; where you grew up; etc. your family medical history - diseases and conditions people in your family have or had your personal medical history - diseases and conditions YOU had or have regardless of your family medical history
In the tradition of Puritans, Pride is a sin. The saying Puritans Pride may seem like a rather hypocritical statement, but it is possibly a reference to Thomas Pride - a civil war colonel who was forcibly removed from power on December 6th, 1968. The modern day expression often refers to a brand of vitamins.