Answer:
B. The creation of weaponized chemicals such as mustard gas that forced troops to live in fear and have to constantly be ready to do their gas masks
Explanation:
B. permitted to retain control over their local lands
The US migration trend began shortly after the second world war to the suburbs.
<h3>Suburban migration?</h3>
After World War II, people began migrating towards the suburbs because the suburb infrastructure was being facilitated by the government. Facilities such as zoning laws, better transport were being provided which attracted the people to move towards the suburbs.
With this information, we can conclude that the US migration trend began shortly after the second world war to the suburbs.
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