of which country was this?
The United States.
Presidency of George Washington
The presidency of George Washington began on April 30, 1789, when Washington was inaugurated as the first president of the United States, and ended on March 4, 1797. Washington took office after the 1788–89 presidential election, the nation's first quadrennial presidential election, in which he was elected unanimously. Washington was re-elected unanimously in the 1792 presidential election, and chose to retire after two terms. He was succeeded by his vice president, John Adams of the Federalist Party.
how did the first president to choose federal officials He chose by appointing all of the high-ranking officials in the executive and judicial branches, shaping numerous political practices.
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Presidency of George Washington [SEP] Introduction
The presidency of George Washington began on April 30, 1789, when Washington was inaugurated as the first president of the United States, and ended on March 4, 1797. Washington took office after the 1788–89 presidential election, the nation's first quadrennial presidential election, in which he was elected unanimously. Washington was re-elected unanimously in the 1792 presidential election, and chose to retire after two terms. He was succeeded by his vice president, John Adams of the Federalist Party. Washington had established his preeminence among the new nation's Founding Fathers through his service as Commander-in-Chief of the Continental Army during the American Revolutionary War and as President of the 1787 Constitutional Convention.