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In the mock-up of an airplane cabin, heated yellow bags were placed where people would normally sit in order to replicate the situation where the plane is full of people. The yellow bags were heated since human body temperature is generally at 37 degrees Celcius. This is to correctly construct an experimental model of the airplane cabin.
The locomotive used the same technology but could travel more broadly.
California was to enter the Union as two states. The northern one would be a "free" state called California and the southern one would be a territory which was to immediately become a “slave” state to be called Colorado. Californians were outraged that the federal government could overrule the decision of a state.
From the beginning of the 17th century (1600s) to the mid-18th century (1760s) in the American colonies. The policy was an attempt to maintain a relationship with the colonies without provoking them into war. The policy that was administered by the British was one in which laxer controls and parliamentary procedure was used.
The end of this period relates to the massive debts incurred by the British during the French/Indian Wars, which was a victory for the British, but a costly one. As such, the British needed to revert back to more strict enforcement of their policies towards the colonies, namely enforcing, as well as increasing taxation.
This of course became integral to the formation of the anti-British sentiment which grew during this period and is associated with the slogan, "No taxation without equal representation". This was due to the British enforcing taxes, as well as increasing what colonists were unfair taxes due to their lack of representation in the creation of these taxes which were imposed on them.