Slavery started in the colonies because the colonists needed cheap labor to grow the economy quickly by exporting things to England and some parts of Europe.
Steel plows... https://quizlet.com/120311605/apush-chapter-16-flash-cards/
They offered defensive positions and safety to the people. They were also where the Lord lived and where the lord was is where the money was. Thus trade and economic prosperity happened around the castle. Many trades were needed to support the lord and his castle. The lords army had to be equipped and fed. Thus markets and tradesmen were needed to support the lord and his castle.
Farming scenes are very difficult to set up, especially to make them seem peaceful. I had to help make a farm scene for a play and it was very hard to do with everyone moving stuff around.
the US was very concerned because of the fact that Cuba had nuclear missiles within range of Washington D.C. and the leader of Cuba was being heavily supported by the Russians which at this time the US were involved in a cold war with where each side was moments from launching nuclear missiles at one another.