The French and the British wanted the Ohio River because that was viewed as the key to controlling the territory between the original colonies and the Mississippi River. Google the terms French and Indian War and Ohio River.
Answer:
East Africa
The physical geography of East Africa is dominated by the Great Rift Valley, which extends through the middle of the region from north to south. Associated with the rift valleys are vast savannas such as the Serengeti Plain, large lakes, high mountains, and the highlands of Ethiopia.
"<span>The British hoped to tighten control over the empire" would be the best option, but the main reason beyond this was that they wanted to discourage trade with other nations, in order to increase profits. </span>
It’s either Foreign Threats or Economic Problems I’m not 100% sure I’m sorry