Select two reasons for the creation of the Smithsonian Institution. OOO
to fulfill the bequest of James Smithson
to begin a university library
to spread knowledge
to appease the resistance of the British government
to unite the United States and Great Britain
to increase James Smithson's fortune

Refute it, showing why it is mistaken—an apparent but not real problem; acknowledge its validity or plausibility, but suggest why on balance it's relatively less important or less likely than what you propose, and thus doesn't overturn it; concede its force and complicate your idea accordingly—restate your thesis in a more exact, qualified, or nuanced way that takes account of the objection, or start a new section in which you consider your topic in light of it. this will work if the counterargument concerns only an aspect of your argument; if it undermines your whole case, you need a new thesis.

Cause it was important to him now stop being a bully