The Battle of the Coral Sea provided the first opportunity for the US Navy to challenge the Japanese Navy with roughly equivalent forces. In the interwar period the US Navy had trained for long range strikes by carrier-based aircraft and this battle was the proving ground for this capability.
The twenty-sixth amendment to the United Sates Constitution prohibits the states and the federal government from using age as a reason for denying the right to vote to citizens of the United Sates who are at least Eighteen years old.
Do you mean American Indians/Native Americans or Colonizers? Bering Land Bridge (anthropological answer) or the Atlantic Ocean (history/ colonizer answer)