1. As a nation.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• nationanly,
• nationaliy,
• nationalo,
• nationail,
• nationalti,
• nationalk,
• nationallly,
• motionally,
• nationallty,
• nationaly,
• nationall,
• natinaly,
• nationailty,
• nationatly,
• nastionaly,
• intionally,
• nationallity,
• nationalty,
• notionally,
• natioanlly

• national flag,
• nationality,
• nationalise,
• nationalistic,
• nationalize,
• notional,
• national,
• national park,
• national debt,
• national bank,
• nationalism,
• nationalist.

The adjective form of "nationally" is "national".

The plural form of the word "nationally" is "nationally" itself because it is already plural.

The singular form of the word "nationally" is "national"