During the second major wave of immigration from the late 1800s to the early 1900s immigration to the united states came mostly from

From 1870 to 1900 , most immigrants to the U.S. came from northern and wstern Europe, including Great Britain, Ireland and Scandivania.  They escaped poverty, lack of economic opportunity and religious persecution.

Explanation:

angle a = 40.6°

step-by-step explanation:

for any right angle triangle we know the pythagoras theorem reveals

hypotenuse² = height²+base²

by this formula we will calculate the length of hypotenuse

h² = 6²+7²

⇒ h =√36+49 = √85 = 9.22

now from the given triangle sin a = height/ hypotenuse

                                                sin a = 6/9.22 = 0.651

therefore

so angle a = 40.6°

u

explanation: