One possible answer to the economic problems in west and central africa is

(b) britain had a much larger navy than the u.s.

(d) the u.s. had a small army compared to britain.

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.