While playing the 1850 campaign, I watched the U. S. Civil War start in 1861 as usual, and I kept hopping over to North America from my country to watch how it went. The Union successfully invaded the Carolinas, from which they took both Atlanta and Richmond within a single year. The western theater also collapsed. It was a decisive victory.
However, in Early March of 1862, I got the message "As no significant military activity happens between United States of America and Confederate States of America, a white peace is now in effect." How did this happen? Has anyone else seen this before?