Why does Roosevelt say that America should not assume that they have time to prepare and that the Atlantic Ocean will prevent an invasion?

he was sent to prison on various charges for protesting south africa's policies of apartheid

hello,

  i would that it was because no matter how hard people worked everyone would be paid the same, witch it was a that the russian to rule.

have a great day

it increase by 12% a year from 1812-1820