But history is history, it can be fascinating, cruel, dull and often a lot stranger than fiction. Slavery was not something Mexico was crazy about and soon banned slavery in the entire country except for Texas. I remember learning about the Alamo in school and slavery wasn't mentioned. ADVERTISEMENT#7 Texas and MacMillan Books removed important Native American history like ‘Trail of Tears’ from their textbooks . #19 The circumstances surrounding the death of Meriwether Lewis (of Lewis and Clark) are shrouded in conspiracy.