Individuals are simultaneously added and removed from the population due to<span> mortality and emigration</span>
Answer:
1. Cotton Gin: In colonial times, cotton cloth was more expensive than linen or wool because of the extreme difficulty of separating seed from the clinging fibers. One man could pick the seeds from only about 1 pound of cotton fiber per day.
2. Reaper/Binder: Small grains had been harvested by hand for centuries, cut with sickles or scythes, hand-raked and tied into sheaves. Grain harvesting machines first appeared in Great Britain in about 1800, and in the U.S. a decade or two later, but most failed. Obed Hussey and Cyrus McCormick developed successful reapers during the 1830s.
3. Thresher: When grain was being cut by hand, the method for separating the kernels from the straw was equally slow and labor intensive. Grain was hauled to a barn where it was spread on a threshing floor and either beaten with hand flails or trampled by animals. That knocked the kernels free of the straw, which was then raked away. The remaining mixture was winnowed by tossing it into the air where the wind was relied upon to blow the chaff and lighter debris away from the heavier grain, which fell back onto the threshing floor.
4. Combined Harvester-Thresher: By the 1920s the steam traction engine was on it's way out, but it paved the way for the gasoline tractors that followed.
Explanation:
i have more like...
**Steam Engine**
**Auto Truck**
**Gasoline Tractor**
**General Purpose Tractor**
**Hydraulic Implement Lift with Draft Control**
Zitkala-Sa, (Lakota: “Red Bird”) birth name Gertrude Simmons, married name Gertrude Bonnin, (born February 22, 1876, Yankton Sioux Agency, South Dakota, U.S.—died January 26, 1938, Washington, D.C.), writer and reformer who strove to expand opportunities for Native Americans and to safeguard their cultures.
Zitkála-Šá also known by her missionary-given and later married name Gertrude Simmons Bonnin, was a Yankton Dakota writer, editor, translator, musician, educator, and political activist. She wrote several works chronicling her struggles with cultural identity and the pull between the majority culture in which she was educated
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C. establishment of a political union of member nations
