How did timbutku become center of trade and culture

Timbuktu's location at the meeting point of desert and water made it an ideal trading centre. In the late 13th or early 14th century it was incorporated into the Mali empire. By the 14th century it was a flourishing centre for the trans-Saharan gold and salt trade, and it grew as a centre of Islamic culture.

Explanation:

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.