What do you think was the authors purpose in using tree roots as the symbol for the iroquois confederacy

Deganawida "The great peacemaker" came to the Five Nations that were constantly in belligerence, with a message he had received from The Creator that contained the principles of peace, equality, respect, love and justice.

He unified the nations as in a "Communal House" where each had its own fire. In the center - Onondaga Territory - The Great Peace Tree was planted, its branches represented the homes in the Confederate nations and its roots extended to the four cardinal points, invited other peoples to take refuge in it.

i'm not good at running

uncanny would be like unlucky or disaster. you can look for more in the dictionary or if you have text book then turn to a. 17 but it's different with textbooks.