Border ruffians who disrupted kansas before its statehood were from?

The Border Ruffians who disrupted Kansas before its statehood were from Missouri. Missouri is one of the many pro-slavery countries and it wanted to make their neighboring countries as their slaves. It was in 1854 during fall season, that an estimated 1,700 pro-slavery men went to Kansas to have their representative elected. They threatened everybody and shoot anyone that is opposed to slavery. Their representative that time has been elected to Congress even if their votes had been called fraudulent.

It should be at the center of any map going vertically: the prime meridian, as it passes through greenwich,  england, is considered 0 degrees longitude