Until the 1900s immigration to the United States was fairly simple because of the need for...

Explanation:

The 19th century in U.S saw massive industrialization all over the country. It led to a massive need of workforce and labor to work on these industries. At the same time, new cities started to grow in the country with industrialization and urbanization.

To meet the demands of the new cities, industries started manufacturing more steel, iron, textiles, etc. which all consequently led to the need of more workers and labors in the country.

it is due to the halo effect as the impression of the boy created earlier.on the mind of the principle affected his decision

answer; (cognitive   dissonance);