Idk if your asking what the oldest political party is but I'm assuming you are so,
Federalist is the oldest party in the US. They eventually become the democrats.
Unemployment was high and working conditions were poor.
A biggie: the transcontinental railroad. Because it would economically improve wherever it was, both the North and the South competed for the railroad to be in their respective territory, evidenced by the Kansas-Nebraska Act and the Gadsen Purchase and induction of California as a free state in 1860.
In addition: people could get land cheap because it was abundant and might leave to start afresh economically.
There's other stuff I can't remember as clearly, but there's a little and I hope it helps :)
Answer: The probe won’t display a reading because the skull is too old. There isn’t enough carbon-14 remaining to accurately assess its age.
Explanation: change it up a bit though.
Learned behavior
This is because instinct drives them to eat and find food, but they have to learn that a certain feeder is always out and available
