Confederates had to swear by two requierments of the ironclad oath which were:
a) they could not longer fight against the u. s voluntarlly
b) a willingness to pay any form of reparation requierd of them
c) no longer could they bear arms against the united states
d) acceptance of any and all punishment placed on them

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

geography

this is because warmer climates often don't get people sick from the flu and regions where it was often colder more people received the flu. hope this if you need more reasoning i am here to

the exodus of these people from constantinople contributed to the revival of greek and roman studies, which led to the development of the renaissance in humanism and science. byzantine emigrants also brought to western europe the better preserved and accumulated knowledge of their own greek civilization