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100

In 1863, workers for the Central Pacific Railroad began laying railroad tracks in which place?

Sacramento 

100

Eventually, antiseptic was invented which helped kill what?

Kill germs and to treat wounds. 

100

Chinese immigrants worked for what?

Central Pacific Railroad

200

In 1865, workers for the Union Pacific Railroad began laying railroad tracks in which place?

Omaha, Nebraska

200

What was the first school of nursing that opened in New York?

Bellevue Hospital

200

Chicago continued to grow, but in 1871, a fire destroyed the city. As they rebuilt the city, architects began to design tall office buildings, making Chicago the first center of what?

Skyscraper architecture 

300

Finally, on May 10, 1869, two railroad lines met where?

Promontory Summit, Utah

300

The idea of extensive medical research began with the opening of which medical school?

Johns Hopkins Medical School

300

Many soldiers who were wounded in the war died because they did not have the benefit of what?

Sterilized surgical instruments and wound dressings.

400

In 1869, Roebling began building a bridge across the East River between the cities of New York and Brooklyn. When he died, his son Washington took over the what?

Brooklyn Bridge Project 

400

John Roebling, a German engineer, pioneered the design of what?

Suspension bridges in the United States

400

With the introduction of better anesthetics (painkillers), What made even greater progress?

Surgical practices made even greater progress. 

500

This city and state became a prime location to start construction for the tall office buildings.

Chicago, Illinois

500

Irish immigrants and Civil War veterans worked mostly for what?

The Union Pacific Railroad

500

Daniel Hale Williams, a Black American physician who pioneered heart surgery, established what?

Provident hospital in Chicago, the first hospital open to all, regardless of skin color. 

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