Where is us the passenge it’s not here to be seen to answer the question
They believed that they either migrated by foot or by boat
Because Thomas Carlyle who was a writer and philospher, made up the phrase that economics is "dismal science" (dismal meaning depressing) because he believed that humans are trapped in a world where population will always grow and limit natural resources and bring widespread misery.
The British want to take over more land and explore more.