Answer: The Manhattan Project was the code name for the American-led effort to develop a functional atomic weapon during World War II.
Explanation: The Manhattan Project was the American program for researching and developing the first atomic bombs. The weapons produced were based solely upon the principles of nuclear fission of uranium 235 and plutonium 239, chain reactions liberating immense amounts of destructive heat energy.
Answer:
B I would say because they already used C and D so I just chosed the on that make sense
Letters would be an example of a primary source
Answer:
Munis,” just like Treasury bonds, provide a guaranteed rate of return, AND the income you earn from munis is tax-free. But there are two things to keep in mind: Munis are long-term investments, generally 20-plus years. Interest rates are currently at historic lows