history

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Indus Valley Civilization

por Randy Reese

Mars

por Tina Webb

Progressive Era- Unit Plan

por Robert Martin

The Management Environment

por Ethan Kwan

What was the "boom"?

Airlines

1930

New aicraft companies flew 162,000 flights a year

The new roads

Gave a rise to a new truck industry

1919

1 million truck

3,5 million truck

New economy

Increase

Fridges

Radio

Telephone

Cars

More buildings

New York City

Electricity

1918

Only few house have electricity

1929

Most of the houses have electricity