Answer:
Early residents of the Indus Valley created streets and buildings using a grid pattern.
Answer: fault plain
Explanation:
its called fault or fault plain i guess
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).
It's being estimated that dinosaurs lived on Earth from about 237 million years ago to about 66 million years ago. So answers B and D are definately too "old", while answer A is too "young". I'd pick answer C as it's most probable.
A democracy is what we are
