What were the important contributions made by the lewis and clark expedition?

question is unclear.

i can't sorry.

post the full question so i can .

the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.

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.

she believed that scott was her late husband's property.