Read the paragraph, and then answer the question. The building of the Three Gorges Dam in southern China has not been without controversy. The dam is the largest in the world, and it provides much-needed electricity for the region. However, the dam has also caused significant environmental damage.

What key event is introduced in this paragraph?

A.
the building of the Three Gorges Dam
B.
the environmental impact of the Three Gorges Dam
C.
the generation of electricity by the Three Gorges Dam
D.
the development of controversy about the Three Gorges Dam

what is your question? i can you

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.

a big wall across the mexican border so no drugs, terrorist, or illegal immigrants can come through : )    

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.