How did the hun contribute to the fall of the western empire?

As nomadic group of people which belonged to the region around the Capsian Sea, The Huns were responsibles for the Great Migration.

With brutal invasions of the regions sorrounding the Roman Empire, this tribe encouraged such migration, also known as the "Wandering of the Nations", which began between 300 and 700 CE, and was formed by the Alans, Goths, and Vandals among others.

They moved fast and were successful at battle. In 370 CE, they defeated and conquered the Alans, by 376 CE had pushed the Goths into Roman territory, and by 379 CE had pushed the people under the leadership of Athanaric into the Caucalands. These attacks produced a domino effect since many tribes, in their escape, sought refuge in Roman territory.

Such migration altered the conditions of roman society and eventually, after many insurrections and raids from these tribes, the Western Empire was weakened and collapsed.

the correct answer is:

b) a rich merchant.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.