What are the best performing ETFs available to investors in the Central African Republic that offer strong long-term returns across global equity, bond, commodity, and diversified index funds? Which international ETFs are considered most suitable for investors in the Central African Republic based on historical performance, liquidity, expense ratios, diversification benefits, and global market exposure? Which ETF investment options are considered industry leaders for Central African Republic investors given limited local markets and reliance on international brokerage access?