The use of slaves was reduced, because immigrants could fulfill the same roles as slaves in factories.
The correct answer to this open question is the following.
Although the question does not include options, we can answer the following.
Many middle colonies were created so that people could gain wealth but in contrast, many New England colonies served as a refuge for people who faced religious persecution.
That was the case of the Puritans, that had so many differences in Britain with the Church of England and were persecuted for religious motives. The Puritans decided to emigrate to North America and arrived at Cape Town, Massachusets in 1620. There, they founded the Plymouth colony, a place where they could live and teach their strict religious principles.
After then U.S. President Woodrow Wilson's failed attempts to negotiate an agreement with Germany to end the unrestricted attacks of German submarines on British ships the German Foreign Minister, in what came to be known as the Zimmerman Telegram, invited Mexico to join the war alongside Germany and offered to help Mexico recover the Texas, New Mexico and Arizona territories. The UK intercepted the telegram and passed the information along to President Wilson. America saw this invitation as an act of war and so in an effort to put an end to militarization from foreign opposition U.S. congress called for war on Germany on April 6th, 1917.
<span>A system of politics or principles based on practical rather than moral or ideological considerations.</span>