The principle of self-determination proved difficult to implement because

Explanation: Self-Determination is a tricky thing to implement because one person's self-determination can get in the way of another person's self-determination. Society requires compromise to function.

d) a week

because the land run of 1889, although not without precedent in the history of the west, further, their men were aboard the first trains, ready to jump off and begin staking their claims. oklahoma city, edmond, and guthrie were all so affected.