Excerpt from the river thames roberto barerra 1 rivers have played an important role in human history. since ancient times, towns, cities, and entire civilizations have thrived around rivers, which provide people with many of life’s necessities. one such river, the river thames, has been instrumental in the founding and development of 8 though people no longer rely on the thames as the only way to get around, the river is still important to many if not for the thames, the world as we know it would be a very different place. what is the most likely reason that londoners no longer rely on the thames as their main mode of transportation? a) modern forms of transportation are more convenient. b) the river is too polluted for people to travel across. c) military personnel have blocked off parts of the river. d) unpredictable floods make traveling the thames dangerous.