According to their journals how did Lewis and Clark honor the president Jefferson and other government leaders.

They named rivers they discovered after them.

Explanation:

Lewis and Clark honored the president at the time by naming rivers them.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.  

i believe your answer is mountains.