Art and architecture get spread by different artists and architects/builders being exposed to a certain type of art. While in the past this has been done through travelling. Nowadays, artists or architects can simply look a certain style up and already be influenced by it.
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Regulation
The government can respond to externalities through command-and-control policies or market-based policies.
John F. Kennedy was:
- Born: 29th of May, 1917
- Lived: 46 years
- Raised: 1917 - 1935 (if we consider he was raised untl 18 years of age)
- Died / Killed: 22nd of November, 1963
Hope it helped,
BioTeacher101
In the U.S, the Office of Management and Budget "c. oversees the preparation of the federal budget," although this is done in coordination with the president.