Cinco de Mayo has its roots in the Second French intervention in Mexico, which took place in the aftermath of the 1846–48 Mexican–American War and the 1858–61 Reform War. The Reform War was a civil war that pitted Liberals (who believed in separation of church and state and freedom of religion) against Conservatives (who favored a tight bond between the Catholic Church and the Mexican state). These wars nearly bankrupted the Mexican Treasury. On July 17, 1861, Mexican President Benito Juárez issued a moratorium in which all foreign debt payments would be suspended for two years. In response, France, Britain and Spain sent naval forces to Veracruz to demand reimbursement. Britain and Spain negotiated with Mexico and peacefully withdrew, but France, at the time ruled by Napoleon III, decided to use the opportunity to establish an empire in Mexico that would favor French interests, the Second Mexican Empire. The empire was part of an envisioned “Latin America” (term used to imply cultural kinship of the region with France) that would rebuild French influence in the American continent and exclude Anglophone American territories. 
Cinco de mayo coloring pages, For your convenience, all pictures are broken up into categories, which are extremely simple to navigate through.