What was one effect of settlers bringing herds of sheep and cattle to the west in the mid-1800s? a: native grasses were destroyed. b: american indians benefited. c: water supplies were polluted. d: diseases were spread.

The correct answer is alternative A) Native grasses were destroyed.

Sheep and Cattle need grass to feed on, so it's logical to infer that once they went West with their herds, they needed to feed on the native grasses, thus destroying them. Local cattlemen considered the sheepherders as "invaders who destroyed the public grazing lands", further confirming the answer.

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.

the main concern with the first draft of the articles of confederation was too much power in the state governments.