What made world war 1 more devastating than any previous wars?

Europeans we're motivated to trade with China because

In 2009, the us had a population of about 307 million people. if there were 14 births and 8 deaths per 1000 people, what was the country's net population growth that year (ignoring immigration and emigration) ?

One effect of the British landlord system in Ireland in the mid-1800s and in India in the early 1900s was that these landlord systems (1) contributed to famine and suffering (2) allowed local economies to prosper (3) emphasized food crops over

Who was the astronaut that piloted the first manned space flight Apollo 7, and today owns a company that provides money to companies to develop new technologies?

How does the developments of agriculture and metallurgy relate to settlements, population growth, and emergence of civilization?

What is the name of the first contestant. and who does he represent?

What was the widespread movement to challenge catholic church?

Why would farmers and frontier settlers demand war against britain? they were tired of britain's interference in trade and the impressment of american sailors. they wanted to export goods to europe but britain refused to accept american products.

If a country is moving from a command economy to a mixed economy, it would most likely

Where was Nineveh located