Milestones: 1899–1913

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President Theodore Roosevelt oversees the long-term goal of the United States - realization of the transgender canal. Throughout the 19th century, the U.S. and British leaders and businessmen wanted to ship the goods quickly and cheaply between the Atlantic and Pacific coasts.

For this purpose, in 1850, the United States and the UK negotiated the Clayton - Bourbon Treaty through the Central American Republic of Nicaragua to manage the competition for the proposed canal. However, the British Rice Canal has never crossed the planning stage. The French tried to make a canal through Panama (Colombia). Fed by the builder of the Suez Canal in Egypt Ferdinand de Lesseps - the French began digging in 1880. Malaria, yellow fever and other tropical diseases lose about 20,000 lives in 9 years, oppose the Lesseps movement, and France is about to bankrupt. Despite this retreat, interest in the canal in the US continues to rise. The 1901 Hay - Pahn Se - Fort Treaty abolished the early Krayton - Burbo Treaty and allowed the United States to construct and manage its own canals. On June 19, 1902, following a violent discussion on the proposed location of the canal, the US Senate voted for the construction of a canal through Panama. Within six months, Secretary of State John Haye and Foreign Minister Thomas Hellen of Colombia signed a treaty to establish a new canal. In the Colombian parliament, financial conditions were not accepted and we refused the offer.

President Roosevelt's response was to send US warships to Panama City (Pacific) and Cologne (Atlantic Ocean) to support Panama's independence. On November 3, 1903 the Colombian army was unable to negotiate with the Darien Strait Jungle, Panama declared independence. The newly announced Panama Republic was immediately appointed as a special envoy and minister of all powers of the Philippe Bunau-Varilla (a French engineer who took part in the early De Lesseps canal trial). Among his new roles, Bunau-Varilla negotiated the Hay-Bunau-Varilla Treaty of 1903. It provided a 10-mile wide canal land to Panama and a temporary payment of $ 10 million once a year. An annuity of $ 250,000. The United States also agreed to guarantee the independence of Panama. The Panama Canal was completed in 1914, symbolizing the technological and economic power of the United States. U.S. canal management eventually became a factor to stimulate the relationship between the US and Panama, which was called the achievement of major foreign policy.

Mexico has raised a special issue for Wilson diplomacy. Mexico has been revolutionary since 1999 and was governed by the anti-revolutionary President Victoriano Huerta in 1913. And that constrained the country 's bloody autocratic rule. Most European countries welcomed the foreign investment order and friendly atmosphere offered by Huerta, but Wilson refused to admit that the "genocide government" apparently did not reflect the Mexican people's wishes Did. His position encourages anti-Welta forces led by Venastiano Karanza in northern Mexico.

In the summer of 1899, the San Diego Normal School became the first California Normal School to offer the summer program, which lasted until 1913. On June 21, 1900, 23 women and 3 men graduated in the first class. In the second half of the year, the building on the east side of the original building was completed and 18 rooms were added. In 1903, the state allocated $ 61,000 to West Wing; it included gymnasium, library, laboratory, lecture room and museum. The West Wing was completed in September 1904. In 1906, the California State Parliament requested students to obtain a high school diploma in order to enter a regular school. This is the same requirement as entering the University of California.

In 1899 when Adler was born, Henry H. Bliss became the first American to die in a car accident when an electric taxi ran over him in the streets of New York City. Since then, the number of traffic fatalities has increased rapidly. In 1913, there were 1,260,000 cars on the road inside the United States, 4,200 people died in a car accident, and when Adler experimented by 1925, the number of deaths increased more than 5 times to 21,900 It was. Public protests increase as the number of deaths increases. In 1920, the Chicago Tribune started opening a daily column detailing car death around the city. In addition, many American cities are caught up in the traffic jam dilemma. Entire vehicle system supporting roads, intersections, bridges and other infrastructure - confusion