Reactions to USSR using military force to make Eastern Europe communist ... was the only E. European nation that was communist without being a satellite.
Uncle Sam--leader of the country or the symbol of the country-- and Lady Liberty-- symbol representing the freedoms and ideals of the country.
The whole country was under investigation and the cartoon suggests all people could be seen as a threat to the country. It also suggests the ideals of the country could even be a threat to the security of the country.
The development of agriculture changed the way people lived because they had to grow their own food.
I hope this helps. :)
Answer:
Well based on the fact that the very first patented rock crushing machine was made in the year 1830, and the first successful, Eli Whitney Blake's, was in 1858, I'd say the development process was around 30 years.
