To graph this inequality, start with an open dot on -2.
We use an open dot because n is
greater than -2 but n is not equal to -2.
Next we draw an arrow to the right
to represent all numbers greater than -2.
I have graphed this inequality below too.
The graph below is my own work.
This should correspond to the first answer choice.
The appropriate choice for the non-event is ...
... A. The costs of sewing machines began to increase.
_____
Interchangeable parts generally reduce costs and increase demand (and production).
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 :)
