Which backing for the united states currency was favored by the president in office during the gilded age

Mark Twain used the term "gilded" to refer to theappearance of the period being wonderful while underneath it wasbase and worthless in the same manner that gilded (gold plated)lead can appear to be gold but ut remains worthless.

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

i dont know but i need points