1884 and 1914
Good luck!!!
Advanced cities are center for trade with a large population and an organized government a long-lasting pattern of organization in a community such as economy, religion, government, education
question answered by
(jacemorris04)
Answer:
The rock of the ocean floor contains iron.
Explanation:
As molten material cooled and hardened, the iron bits inside lined up in the direction of Earth's magnetic poles, creating a pattern of magnetized stripes.
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