What did president grant pass to prevent southerners from using fear to shut african americans out of the political process?

Under the presidency of Ulysses S. Grant, between 1870 and 1871, the Enforcement Acts were passed.  

These three bills were criminal codes proposed to defend African-Americans’ political rights threatened by the Ku Klux Klan (KKK) and other white supremacy organizations.

They were created to guarantee particularly the right to vote, as well as to hold office and receive equal protection of laws.

basically means the stoc market is going down since   dow is one of the most sucessful buiness it would be a tragedy for it to go down and it ensures the ruinty of the stock market