Citizenship by Investment (CBI) programs are a means by which individuals can obtain citizenship or residency in another country by investing a certain amount of money in that country. The history of CBI programs can be traced back to the 1980s when countries such as Saint Kitts and Nevis and Dominica started offering such programs to boost their economies.

The concept of CBI programs is based on the idea that foreign investors can bring significant economic benefits to a country, such as creating jobs, stimulating growth, and increasing tax revenue. In exchange for their investment, the investor is granted citizenship or residency rights in the country, which can have many advantages, including greater mobility, access to better education and healthcare, and taking advantage of business opportunities.

Over the years, the popularity of CBI programs has grown significantly, with many countries now offering such programs. Some of the most popular CBI programs include those provided by countries such as Dominica, Malta, Antigua and Barbuda, and Saint Lucia.

Despite these challenges, however, CBI programs remain popular among investors. They will likely remain a vital tool for countries looking to attract foreign investment in the coming years.