How did World War affect the role of the federal government? pleas

With U.S. entry into the Great War, the federal government expanded enormously in size, scope, and power. It virtually nationalized the ocean shipping industry. It did nationalize the railroad, telephone, domestic telegraph, and international telegraphic cable industries.

Explanation:

the answer is b your welcome : )

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.