What natural resource was so important that it was mentioned in numerous treaties between the colonial powers in the 16th and 17th centuries?

Who was Popé?

Who was the Portuguese explorer who worked for Spain and started history’s first round-the-world voyage but died in the Philippines, so Sebastian Elcano (del Cano) had to take command and finish the trip?

What was the primary theme of Upton Sinclair’s The Jungle?

What financier brokered a deal to provide gold to the US Treasury when reserves became dangerously low during the Panic of 1893?

what member of Mr Horky’s family was in the slide illustrating mail-order houses from Sears?

why did both populists and progressives favor the direct election of senators?

Where was the first commercial oil well in the USA?

Mark Twain labeled the period between 1870 and 1890 as the:

Where was the first commercial oil well in the USA?