Answer :

Here is the chronological order of the events you mentioned:

1. Seizing of Puerto Rico: Puerto Rico was seized by the United States during the Spanish-American War in 1898. The Treaty of Paris in 1898 ended the war and ceded Puerto Rico to the United States.

2. Expansion into Guam: Guam was captured by the United States during the Spanish-American War in 1898. It was ceded to the United States by Spain in the Treaty of Paris.

3. Annexation of Hawaii: Hawaii was annexed by the United States in 1898. The Newlands Resolution, passed by the U.S. Congress, provided for the annexation of Hawaii as a U.S. territory.

4. Alaska Purchase: The United States purchased Alaska from Russia in 1867. The purchase, known as the Alaska Purchase or Seward's Folly, was orchestrated by U.S. Secretary of State William H. Seward.

So, the chronological order is:

1. Alaska Purchase (1867)
2. Expansion into Guam (1898)
3. Seizing of Puerto Rico (1898)
4. Annexation of Hawaii (1898)