Why does it say on Internet you have blue blood but when oxygen hits your blood turns red?

How did the completion of the transcontinental railroad change the lives of american citizens? a-it increased the wealth of all americans and enabled them to travel more.b-it made cross-country travel too expensive for ordinary americans.c-it decreased the safety of americans who moved to settle the plains.d-it shortened travel time between the east and west for all americans.

Why did reconstruction polices split the women’s suffer age movement?

The u.s. constitution outlawed slavery. true false