Imperialism led to the assimilation and loss of unique indigenous cultures. Imperialism can give native peoples from different countries many positive opportunities and the change to live a new improved lifestyle. Imperialism can change laws giving people more freedom and rights.
48÷2=24, 24 is half of 48, 24 days is half of the amount of time as 48 days, so if it takes 48 days for the whole lake to be covered, it would take 24 days to cover half of it.