Roosevelt Corollary
The Roosevelt Corollary was the foreign policy of President Theodore Roosevelt regarding US action toward Latin America.
The Roosevelt Corollary built on the Monroe Doctrine. It continued the statement that no countries were welcome in the Western Hemisphere. It also stated it would continue to support independence movements in the region. The newest element was Roosevelt's willingness to use American military forces to protect and defend Latin American countries from outsiders. The US began to built navy ports through Latin America to aid in their protection.
By the end of the 13th century, Crusading had become more expensive. The time had passed when a Crusade army was made up of knights who served under a lord and paid their own way. Economic pressures caused many nobles to seek royal service. Royal armies, therefore, became more professional, and many knights as well as foot soldiers served for pay. Moreover, the rise of royal authority meant that great Crusades could no longer be cobbled together by feudal lords but were increasingly reliant on kings, who were by their nature easily distracted by events at home.
The equal protection clause of the Fourteenth Amendment guaranteed equal enforcement of laws for everyone, regardless of race or gender. This paved the way for many new laws, including Title IX, and the Civil Rights Act.
The last Tsar was Nicholas II.