Flag of New Zealand flag has often arisen in connection with the issue of republicanism in New Zealand. The Southern Cross constellation is depicted on the flags of other former British colonies, such as the flag of Australia—although in Australia's case there are six all-white stars, while New Zealand's four stars have red centres. The Australian and New Zealand flags are often mistaken for each other, and this confusion has been cited as a reason for adopting a different design. Debate on keeping or changing the New Zealand flag started before May 1973, when a remit to change the flag was voted down by
Crux exiting the Gambia River in 1455, calling it the "carro dell'ostro" ("southern chariot"). However, Cadamosto's accompanying diagram was inaccurate. Historians generally credit João Faras for being the first European to depict it correctly. Faras sketched and described the constellation (calling it "Las Guardas") in a letter written on the beaches of Brazil on 1 May 1500 to the Portuguese monarch. Explorer Amerigo Vespucci seems to have observed not only the Southern Cross but also the neighboring Coalsack Nebula on his second voyage in 1501–1502. Another early modern description clearly describing Crux as a separate constellation is attributed to Andreas Corsali,