A Massachusetts boy of liberties... Fundamental orders of Connecticut
Pretty sure it was Jericho. Think VeggiTales, and the song "Joshua Fought the Battle of Jericho."
You can consider it to be Isolated. The doctrine was about preventing anyone from Europe from participating in political activities in the new land, and it was proclaimed that any European force that tried to control or colonize countries in the new land would be considered to be unfriendly to the US and the US would help the countries under attack.
My answer is The Union was able to stop Confederate supplies from entering Florida.