Simplify the following text for a Grade 12 native English-speaking person.
Original: A Barnstar of National Merit may be awarded to an editor who contributes significantly by expanding or improving Wikipedia 's coverage of any past or present continent or regional grouping , country , or subnational place such as a province or city .
Simplified: A Barnstar of National Merit may be awarded to an editor who contributes significantly to expand or improve Wikipedia 's coverage of any given country .