The United States of America (USA) has been the world's largest economy since 1871. According to the country's Department of Commerce, in 2019, the GDP of the US "reached an all-time high" of $21.43 trillion. The US also has the second-greatest share (after China, since 2010) of global manufacturing output at 16.6%. In spite of these impressive figures, you may still be reluctant to invest in the US in 2021 due to the country's COVID-19 crisis, civil unrest, and polarized politics. In spite of these challenges, the US remains arguably the most resilient and profitable place to do business on the planet—which is why if you effectively enter the US market in 2021, you will be way ahead of your competition once the current issues affecting the US subside and the country regains it premier status.