The many people swarming to Africa, could'nt have reduced diversity...It would have increased it. Elimination of communism? Nope...The head of the country wouldnt be influenced too much by the people coming in. European influence would'nt have been reduced all too much either. The only answer id D. It brought new ideas to the continent. The people coming to Africa would have had a whole din of ideas, just waiting to improve the average African life. So, yeah, they did improve it.
the development of GPS and GIs technology helped the public transportation system in two ways: - First, it is easier for both drivers or passengers to locate the place that unfamiliar to them, which will reduce the cost and the time for travel.