During the colonial era, most immigrants to the united states came from out all of these which one eastern europe. western europe. northern asia. southern asia.

  Western Europe.

Explanation:

  The colonial era of the United States covers the European colonization from the 16th century until the creation of the colonies. During the late times of the 16th century, many of the European countries began a process of conquering the American continent. Among them, it was France, Spain, Britain, and the Netherlands.

   From the countries given all of them except Spain who focused more on Central and South America began to arrive in the United States. European settlers came from different social and religious groups, adventurers, farmers, tradesmen, and aristocracy.

  I hope this answer helps you.

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.