Question

Give meaning of o'er land and sea​

Answer 1

OVER LAND = by, on, or across land

OVER SEAS = in or to a foreign country, especially one across the sea.

Answer 2

Answer:

O'er means the same as 'over'. [literary, old-fashioned] As long as mist hangs o'er the mountains, the deeds of the brave will be remembered.

Explanation:

the expanse of salt water that covers most of the earth's surface and surrounds its land masses.