The 12 Biggest Breakthroughs In Transportation Technology
TABLE OF CONTENTS Roads 4 Wheel 6 Sailboat 8 Train 10 Steamboat 12 Hot Air Balloon 14 Cable Car 16 Model T Automobile 18 Airplane 20 Jet Airplane 22 Electric Car 24 Space Flight 26 Fact Sheet 28 Glossary 30 For More Information 31 Index 32 About the Author 32
1 ROADS PAVE WAY FOR NEW TRANSPORTATION MODES For the earliest humans the first means of transportation was simply walking People followed paths trampled by animals Later they built roads to make travel easier The first evidence of roads built by people appeared in approximately 4000 BCE A city in what is now Iraq had streets paved with stone Other early roads were made of packed earth Travelers followed them on foot atop animals and later in vehicles pulled by animals The Roman Empire built the first major road system starting in approximately 300 BCE A typical Roman road had several layers A trench was filled with large stones These were covered with smaller stones cement and sand A top layer of smooth paving stones formed the surface of the road These well-built roads linked trade routes between Europe and Asia Modern technology has led to complex highway systems 4
The 12 Biggest Breakthroughs In Transportation Technology
Learn Amazing facts, along with information about key players and the science behind each transportation breakthrough.
About This Book
By: M. M. Eboch
Illustrated by:
Published by: 12-Story Library provided by Amicus, part of The Creative Company
