1.
what contributed to the growth of the know-nothing movement in the mid-1850s?

The Know-Nothing was made of wasps(White anglo-saxon ... In 1850 there was a very high wave of immigration from Ireland(due to the famine)

the decreasing neutrality of the u. s. in world war i

hope this : )

this defines the ability for a flex item to grow if necessary. it accepts a unitless value that serves as a proportion. it dictates what amount of the available space inside the flex container the item should take up.

give brainlest