Greenhouse gasses movement was very large in the later years of this era.
America in the 1920's was still riding high off of their win during WWl and wanted to keep a carefree attitude that was not be affected by other nations and therefore adopted a policy of isolationism.
Answer:
D. a communist youth organization.
Explanation:
The "Young Pioneers" was the name of a communist youth organization.
Answer:
B. It was advanced technology for it's time,
