Traveller's cheques and credit cards (American Express, Visa, Mastercard) are exchanged for Vietnamese dong at the banks. Cards can be used in travel agencies, hotels, and major restaurants. US currency is exchanged for Vietnamese dong and treasury notes in banks, exchange bureaus, hotels, and jewellery shops.
Nikola Tesla designed the first hydroelectric power plant at Niagara Falls, New York which started producing electrical power in 1895. This was the beginning of the electrification of the United States and the rest of the world. Today, Teslaâs AC electricity is lighting and powering the globe.
Nikola Tesla-The Adams plant was based on Tesla's 25 Hz AC power system. The Tesla Society falsely states: Nikola Tesla and George Westinghouse built the first hydroelectric power plant in 1895 in Niagara Falls and started the electrification of the world.