The interesting occurrences surrounding the demand for binding twine between 1880 and 1950 are the focus of a new book written by a Brandon University history professor. Dr. Sterling Evans says "Bound In Twine" looks at the interdependence that developed between Mexico, Canada, and the United States.  The best binder twine was made from plants native to the Yucatan peninsula of Mexico.  Evans notes at one point in 1915 the United States almost went to war with the country to ensure the flow of fibre continued northward.  At that time Mexico was in the throws of a revolution, and a blockade was set up at the Yucatan port to stop the flow of guns and ammunition in, but it also stopped the flow of fibre for binding twine out.  Evans adds the U.S. threatened gunboat diplomacy and ultimatums, but eventually backed off after the Mexican government lifted the blockade.  Evans says the timeframe was a very early incarnation of globalization, and the book suggests the relationships which ensued were an early version of NAFTA.