contestada

The --------- was the most responsible for the ethnic diversity that developed in washington during the years of growth

Respuesta :

The growth of suburbs.

Answer:

railroad

Explanation:

The construction of many railroads in Washington made transporting products more practical and faster. In addition, the construction of railroads brought a large number of immigrants from different countries to the area. This wave of immigrants was the most responsible factor for the ethnic diversity that developed in Washington