I believe it was by giving support to the European countries economically and politically.
The last time the rivalry determined a Big Ten Conference champion was in 1962 when #3 Wisconsin defeated #5 Minnesota for a berth to the 1963 Rose Bowl. Wisconsin won 14 straight meetings against Minnesota, from 2004 to 2017, before the Gophers beat the Badgers in their 2018 matchup.
Shay's rebellion was mostly lead by farmers who were upset by their taxes and debts and decided to take matters into their own hands. They did not want their property taken from them, as this happened when they were not able to pay their debts and/or taxes, so they forced closure of multiple courts throughout Massachusetts. Blood was shed, and eventually Shay's rebellion caused the Constitutional Convention of 1787 which discussed changing the Articles of Confederation which maintained the weak government system and caused many problems. After this the Constitution was created.