Where did the first people in western hemisphere come from?

The first people in the Western Hemisphere are believed to have migrated from Asia via the Bering Land Bridge, known as Beringia, which connected present-day Siberia to Alaska during the last Ice Age, around 15,000 to 20,000 years ago. These early inhabitants gradually spread throughout North and South America, adapting to diverse environments and forming various cultures over thousands of years. Genetic and archaeological evidence supports this migration theory, indicating that these groups developed distinct societies across the continent.