PLEASE QUICK! 20POINTS list at least three ways the columbia and the dams on the river help the people of washington

this only says nine points tho not 20

1. It delayed the British from sneaking over to attack, 2. it helped Washington cross without any loose debris hitting, and 3. it helped him trap his enemies.

Explanation:

there are two main types of historical sources: primary sources and secondary sources. a primary source is something that originates from the past. it can be a chronicle, a piece of pottery, or even a piece of glacial ice that gives us climate data about the levels of atmospheric carbon one thousand years ago.

answer; ///i believe that the correct answer is (b); ///the candidate must be a native born american citzen;