Stumbled on this - not sure if it is worth a dig - seems the Longman dictionary uses a lot of political references
Pearson Longman Keystone Scope and Sequence
https://assets.pearsonschool.com/asset_mgr/current/20158/Keystone%20Scope%20and%20Sequence.pdf
Keystone Scope & Sequence … Retell a legend ….. Understanding Maps: Reading a Map of the United States • Learning Strategy: Use Selective Attention.
Googol
https://en.wikipedia.org/wiki/Googol
Widespread sounding of the word occurs through the name of the company Google, with the name "Google" being an accidental misspelling of "googol" by the company's founders,[6] which was picked to signify that the search engine was intended to provide large quantities of information.[7] In 2004, family members of Kasner, who had inherited the right to his book, were considering suing Google for their use of the term googol;[8] however, no suit was ever filed.
Since October 2009, Google has been assigning domain names to its servers under the domain "1e100.net", the scientific notation for 1 googol, in order to provide a single domain to identify servers across the Google network.[9][10]