How did Northerners and abolitionists react to this Fugitive Slave Act?

Explanation:

Northern reaction against the Fugitive Slave Act was strong, and many states enacted laws that nullified its effect, making it worthless. In cases where the law was enforced, threats or acts of mob violence often required the dispatch of federal troops.

unless they converted, many non-christians (mainly jews and muslims) were persecuted

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.