If you begin investing at age 45 instead of age 40, how much more do you need to invest per month to have $1M at retirement? Why is this amount so much greater than the difference between 20 and 25?

Cherokee  removal, part of the trail of tears, refers to the  forced  relocation between 1836 and 1839 of thecherokee  nation from  their lands ingeorgia, south carolina, north carolina, tennessee, texas, and alabama to the indian territory (present day oklahoma)  in  the thenwestern united states, and the resultant deaths