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FRED International Data: https://fred.stlouisfed.org/categories/32263
Available through Economic Research at the Federal Reserve Bank of St. Louis, FRED is known for US economic data and international economic data including employment, GDP, population, and retail/production
World Bank: https://www.worldbank.org/en/home
Includes information and stats on countries around the globe
International Monetary Fund: https://www.imf.org/en/Home
IMF is an international organization that works to promote monetary, trade, and banking cooperation
Some publications such as country reports, working papers, policy papers, pamphlets and more are available in PDF form
International financial stats available online: https://data.imf.org/?sk=4c514d48-b6ba-49ed-8ab9-52b0c1a0179b&sId=1409151240976
Eurostat: https://ec.europa.eu/eurostat/web/main/home
Provides direct access to the latest and most complete statistical information available on the European Union, the EU Member States, the euro-zone and other countries