The chart shows the population of three major Washington cities. What was the main cause of the change in population from 1880 to 1910?

Washington State has been able to become the leading producer of petroleum in the United States. i think

Explanation:

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.