Sure! Here are the matches for the expansion events with their corresponding years:
- Texas Annexation (Annexed by Congress): 1845
- Oregon Country (Agreement with Britain): 1846
- Alaska (Purchased from Russia): 1867
- United States (Treaty of Paris ending the Revolutionary War): 1783
So, in order:
- 1783 - United States (Treaty of Paris)
- 1845 - Texas Annexation
- 1846 - Oregon Country
- 1867 - Alaska
Let me know if you need further assistance!