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**
They traded their gold for Salt from the Arabs
Currently 7% of the world is covered by rainforests. About 50 years ago it was covered in 14% of rainforests. Not so sure how it would be a 100 years ago
The correct answer to this open question is the following.
Do we have it all wrong about "civilization" being desirable versus "barbarian" society that often resides in the hills being regarded as "uncivilized"?
No. What happens is that in modern times, we find people in societies that behave in the most stranges ways. We can think that people that live in modern societies have a certain degree of formal education, behave themselves according to social patterns and traditions that are expected by other members of society, and show respect and tolerance to other people that think and act differently.
However, as we see it on the news, barbaric conducts are common in modern societies. Even worse than the barbaric behaviors we could expect to see from "uncivilized" people. They have to survive in the wild, that is why they seem to act "uncivilized." But educated or modern people, well, they are supposed to be the educated ones. And many times we are not seeing that by the way they act or react to confront daily situations.
