They might sponsor an explorer for several reasons - and usually did so for a combination of several of these reasons:
A czar (tsar or tzar) was the ruler of old Russia.
tetrarch
England
An empire is a country, state, or region. An emperor is the ruler over the empire.
Great Britain
Explorers often worked for kings and queens because monarchs provided the necessary funding, resources, and political support for their expeditions. Royal sponsorship also served to enhance a nation's prestige and territorial claims, as explorers sought new lands, trade routes, and riches. Additionally, the backing of a powerful ruler offered explorers protection and legitimacy, encouraging them to embark on risky and ambitious journeys. This symbiotic relationship helped advance both exploration and the interests of the sponsoring monarchs.
zheng he
conqulstador
The Incan ruler was killed and the Incan civilization eventually disappeared.
An absolute ruler is a ruler that has unlimited power over their country.
There is no country with no ruler. Every country has a form of government that includes a leader or a ruling body to govern the nation.
The ruler of a country is typically referred to as the head of state or the monarch in a monarchy.
A country whose ruler has unlimited power is called an autocracy.
Catherine the Great was the ruler of Russia.
Autocracy
A czar (tsar or tzar) was the ruler of old Russia.
+yes there is a long time ago she was the ruler of England when the explorers in the United States of America