When American settlers first arrived in Texas in 1821, they were not allowed to bring or trade enslaved people.
they were allowed to bring and trade enslaved people.
they were allowed to bring, but not trade, enslaved people.
they were allowed to trade, but not import, enslaved people.

They were encouraged to bring slaves. For every slave brought to Texas in 1821 you would receive 80 acres of land. so I would say number 2 is your best bet.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

the answer here would be