How did Truman's Fair Deal contrast with Eisenhower's "Modern Republicanism" approach?

I think that you should probably look in your text because
it probably gives you a particular answer you are supposed to
remember.

To me, there is not a huge difference between
these two approaches.  The texts I use to teach out of in my college classes say the
same.  They point out that both Truman and Eisenhower were interested in keeping the
government pretty involved in the economy.

For example,
Eisenhower did not try to end social security and labor laws and farm programs. 
Instead, he actually extended them to some extent.

So, to
me, the difference between the two is very small.  Eisenhower was more concerned with
keeping costs down than Truman was, but he was not really interested in cutting
government back to a large degree.

As one of my books says
Eisenhower's

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presidency in the end served to legitimate the
New Deal by keeping its basic structure and premises intact during an era of
prosperity.

So if your
question is saying there's a big difference between the two, your book clearly disagrees
with mine...