The Mural depicts two sailors who may have been present in either the fleets of Christopher Columbus or Pedro Álvares Cabral, and is part of a series of 4 that present the colonization from the Americas by Europeans. This led to a rise in slave revolts, particularly in the 1860s https://webdesign.mydesign-tool.com/5-things-to-keep-on-in-bear-in-mind-when-choosing-the-outdo--3869553931751359649