federation

noun
1
a country consisting of a group of individual states that have control over their own affairs but are controlled by a central government for national decisions, etc.
فدراسیون, اتحادیه
2
a group of clubs, trade unions, etc. that have joined together to form an organization
فدراسیون, اتحادیه
the International Tennis Federation
3
the act of forming a federation
فدراسیون, اتحادیه
Australia's centenary of federation in 2001