C) Western expansion spread the U.S population over a wider area.
Answer:
Radioactive isotopes are unstable and will decay. ... The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the radioactive isotope and half the stable isotope.
This means that the US is branched into 3 main parts. There's the executive, the legislative, and the judicial.
Hope this helps! (:
When the business is losing money.
