Which statements describe catherine the great?

Catherine failed to reform serfdom

She expanded Russia's borders

She was the 18th century princess who became the Empress of Russia

Despite Catherine's good intentions she kind of screwed up reforming serfdom, but she did expand Russia's borders, so that's cool, right?

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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 answer is a. harriet tubman was a nurse on the battlefield.