Why would the vice president take over the president's job? Who becomes president if the vice-president cannot serve as president? (Site 1)

What event caused south carolina to secede from union in 1860

Why is ivan iv known as “ivan the terrible”?

Match the vocabulary word with its meaning. 1. gender a large-scale spread of a deadly disease 2. pandemic the development and use of machines, devices and ideas to further people's knowledge 3. technology the sex of a person, whether male or female