Dual citizenship or dual nationality is simply being a citizen of two countries. The United States allows dual citizenship. For example, if you were born in Mexico you are a native-born Mexican. If you move to the United States and become a naturalized US citizen, you now have dual citizenship.ual citizenship or dual nationality is simply being a citizen of two countries. The United States allows dual citizenship. For example, if you were born in Mexico you are a native-born Mexican. If you move to the United States and become a naturalized US citizen, you now have dual citizenship.
This was not a dream of science fiction, but a representation of ENIAC (Electronic Numerical Integrator Analyzer and Computer), the gigantic machine credited with starting the modern computer age. ENIAC, with its 17,468 vacuum tubes, 70,000 resistors, 10,000 capacitors, 1,500 relays, and 6,000 manual switches, was a monument of engineering -- and an energy hog.
Herodotus Herodotus of Halicarnassus (c.480-c.429 BCE): Greek researcher, often called the world's first historian. In The Histories, he describes the expansion of the Achaemenid Empire under its kings Cyrus the Great, Cambyses, and Darius I the Great, culminating in Xerxes' expedition to Greece (480 BCE), which met with disaster in the naval engagement at Salamis and the battles at Plataea and Mycale.