• American companies established in 1845(13 P)
• Railway stations in the United States opened in 1845(11 P)

A

• 1845 establishments in Alabama(4 P)
• 1845 establishments in Arkansas(4 P)

C

• 1845 establishments in Connecticut(3 P)

F

• Florida(23 C, 3 P)
• 1845 establishments in Florida(14 P)

G

• 1845 establishments in Georgia (U.S. state)(4 P)

I

• 1845 establishments in Illinois(8 P)
• 1845 establishments in Indiana(7 P)
• 1845 establishments in Iowa Territory(21 P)

K

• 1845 establishments in Kentucky(15 P)

L

• 1845 establishments in Louisiana(7 P)

M

• 1845 establishments in Maine(7 P)
• 1845 establishments in Maryland(7 P)
• 1845 establishments in Massachusetts(18 P)
• 1845 establishments in Michigan(18 P)
• 1845 establishments in Mississippi(3 P)
• 1845 establishments in Missouri(42 P)

N

• 1845 establishments in New Jersey(14 P)
• 1845 establishments in New York (state)(24 P)
• 1845 establishments in North Carolina(4 P)

O

• 1845 establishments in Ohio(19 P)
• 1845 establishments in Oregon Country(10 P)

P

• 1845 establishments in Pennsylvania(19 P)

S

• 1845 establishments in South Carolina(4 P)

T

• 1845 establishments in Tennessee(7 P)
• Texas(24 C, 9 P)

V

• 1845 establishments in Vermont(4 P)
• 1845 establishments in Virginia(2 C, 11 P)

W

• 1845 establishments in Washington, D.C.(2 P)
• 1845 establishments in Wisconsin Territory(9 P)

C

• Commandant of midshipmen

F

• Florida
• Fort Berthold

I

• International Mission Board

J

• Johnson & Higgins

M

• Manifest destiny
• Methodist Episcopal Church, South

P

• Presidency of James K. Polk

S

• Scientific American
• Southern Baptist Convention

T

• Texas
• Texas's 1st congressional district
• Trinity Episcopal Church (Mobile, Alabama)

U

• United States District Court for the Southern District of Iowa

V

• Vice presidency of George M. Dallas

W

• Walhalla, North Dakota
• Worcester, Nashua and Rochester Railroad