Answer:
Option: developed a variety of stone points.
Explanation:
Paleo Indians were the first people who lived in North America. They arrive from Siberia through passing the Bering Land Bridge. They killed animals for food and survival in the cold and wild environment. They also gathered roots, berries, wild plants, nuts for food. Plano, Clovis, and Folsom are three different Paleo-Indian cultures. Plano culture found in Colorado. The Plano developed a variety of spears with sharp points made of stone to hunt animals.
Answer:
It had existed all over the world in various forms for thousands of years.
Explanation:
The Articles of Confederation were unsuccessful because they lacked a strong unitary structure for the United States. The writers feared the power of a strong federal government. In order to prevent strong federal control, the states were privileged as the arbiters of government in the new nation. The supremacy of the states limited the power of the federal government. These limitations proved problematic in constructing a strong nation in the post- revolutionary period.
Answer:

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Answer:
Roosevelt worked towards making life of Americans better and also worked to protect environment
Explanation:
Two important aspects of Roosevelt's life –
a) Roosevelt was determined to improve the life of American citizens as evident from his "Square Deal" domestic program that initiated welfare legislation and government regulation of industry
b) He focused on preserving environment by conserving nearly 200 million acres for national forests, reserves, and wildlife refuges