From reading this quotation by Lincoln, you can infer that the “Know-Nothings” were opposed to all of the following EXCEPT____.a. the abolitionist movement
c. eventual secession
b. welcoming immigrants into the U.S.
d. religious freedom

He built the most powerful navy in the world.

That is something he did NOT do.

The McCarthy Era was one of the darkest periods in U.S.history.  The government was so intent onflushing out communism that they disregarded the rights of its citizens.  It was a terrible time to be different orspeak against the government.  Those whodid were already put under suspicion. Many who were put on the blacklist during that time suffered a lot.  Some lost their careers while others wereimprisoned over hyped-up charges.  Ifthere was anything we need to learn is that we need to protect our freedoms ofspeech, the right to fair trial and the right not to be subjected to unlawfularrest.

Following World War 2, as the Cold War developed and the Soviet Union was gathering allies, there was much fear -- and fear-mongering -- in the United States about the threat of communism.   This time period, from the late 1940s to late 1950s, is known as the Second Red Scare.  This was when the House Un-American Activities Committee (HUAC) was created and when Senator Joseph McCarthy began a campaign of accusations against suspected communists in various sectors of American life.  During the Second Red Scare, many people were targeted -- including especially those in the entertainment industry, journalism, and in government and the military.  The lessons learned from the McCarthy era showed that the freedoms guaranteed in the Bill of Rights must be vigorously defended.  If individual's rights to freedom of speech and freedom of association are called into question, and due process of law is not followed, everything America stands for can come under attack.

A good film you might look for on the subject of McCarthy's fear campaign and how it was overcome is the 2005 movie, "Good Night and Good Luck."  The film shows the efforts of journalist Edward R. Murrow to battle against McCarthy's excesses and unfounded accusations.  It was especially through the efforts of Murrow that McCarthy's excessive actions were stopped.