As of 2013, the United States spends about $554.2 billion annually to fund its military forces, and appropriates approximately $88.5 billion to fund Overseas Contingency Operations. Put together, the United States constitutes roughly 39 percent of the world's military expenditures.
the number of protons in the nucleus of an atom of a particular element. In a neutral atom, the atomic number equals the number of electrons. See also atom, electron, proton.
The mass number, A, is the sum of the protons and neutrons in the element. The atomic number, Z, is the number of protons only. On the periodic table, elements are arranged by atomic number. In this case we see that Carbon is element 6, and so it had 6 protons.