What is the name of the biographer whose famous American subjects include George Washington, John D. Rockefeller, and Alexander Hamilton -- the last of whose biography was adapted into a hit Broadway musical?

In a 1952 speech, Richard Nixon denied using political contributions for personal expenses, but famously said he'd keep what cocker spaniel given as a gift?

What 1836 battle, which secured independence for Texas from Mexico, is memorialized by name in the lyrics of "Texas, Our Texas," the state's official song?

In what future state was the "golden spike" driven into the ground in 1869 to commemorate the completion of the first transcontinental railroad in the U.S.?

In presidential elections, Washington DC receives three electoral votes due to what numbered constitutional amendment, ratified in 1961?

Including a container for a brewed beverage, what is the name of the scandal that rocked the Harding administration in the 1920s, involving bribery to obtain leases of Navy petroleum reserves without competitive bidding?