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_____ are drugs that increase nervous system activity.
Rocky Mountains
A major mountain range in western North America, extending from Canada through the United States, known for its breathtaking landscapes and diverse ecosystems.
Transcontinental Railroad
A continuous rail line that connects the east and west coasts of the United States, completed in 1869, facilitating mass migration, goods transportation, and economic development.
Homestead Act
A United States federal law enacted in 1862 that granted 160 acres of public land to settlers for a small fee, assuming they would improve the land by building a dwelling and cultivating crops.
160 Acre Parcels
A reference to the Homestead Act of 1862 in the United States, which allowed settlers to claim 160 acres of public land in exchange for cultivating it for five years.
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