13
Lesson 13 of 84 · History
Inventions That Changed Our Lives
Inventors have changed history. The light bulb, the telephone, and the computer were all inventions that changed how people live.
Key Facts
1
A timeline shows events in order.
2
Old photographs teach us about long ago.
3
Artifacts are objects from the past.
Timeline
1620
The Pilgrims land at Plymouth Rock
1776
The Declaration of Independence is signed
1787
The U.S. Constitution is written
Check Your Understanding
Question 1
1 of 2What is an artifact?