Ftse All World Can Everyone Across 6 Continents Invest In Any Stockmarket Arround The World Using Internet?

Can everyone across 6 continents invest in any stockmarket arround the world using internet? - ftse all world

Looking to invest some of my savings on international stock markets, such as FTSE, CAC, DAX, etc. NASDAC
Is it possible that someone in Asia or Africa to buy stocks in Europe and the United States in both the long-term daily use with the Internet and credit card with no bank in Europe and the United States? When consulted yes - please.