Match the following.
1. connected Charleston and Hamburg
Pennsylvania canals
2. connected Albany and Schenectady
Baltimore and Ohio Railroad
railroad transportation
3. Tom Thumb
4. caused a decline in canal building
5. made New York City a leading port
Portage Railroad
Mohawk and Hudson Railroad
6. connected Philadelphia and Pittsburgh
South Carolina Railroad
7. completed in 1834
Erie Canal
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world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation: