In many cases it was prohibited for them to learn to read and write
Their owners did not want to send them to school which took up work time nor did they want them to be able to read information that antislavery pamphlets would have. They couldn't write to others who were free who might help them escape.
A high rate of adult illiteracy limits the progress and production that a country can make in today's modern world. The country has to rely on imports for many modern conveniences.
The illiteracy rate in the dominican republic is: 13.0
92.5% (CIA), or 96% (among residents aged 15 yrs & over)
89%
A high rate of adult illiteracy can severely hinder a country's economic development, as it limits individuals' ability to obtain jobs, participate in the economy, and make informed decisions. This can lead to increased poverty rates and social inequality, as illiterate individuals often lack access to essential services and resources. Additionally, high illiteracy can stifle civic engagement and democratic participation, weakening governance and social cohesion. Ultimately, the consequences of widespread illiteracy can impede national progress and stability.
As of recent estimates, Tajikistan has an adult literacy rate of approximately 99.8%. This high literacy rate reflects significant improvements in education since the country gained independence in 1991. However, challenges remain in rural areas and among certain demographic groups, which can affect overall educational access and quality.
57.9% according to wikipedia
About 70% of the population is illitereate.
It is the state of Kerala.
The more people can read and write the more people can get jobs and higher standared of living.
There are several. South Asia , Arab , sub Sahara Africa all have 40-50%. East Asia and Latin America have 10-15%. The US has 40 million illerate people.