Why does Roosevelt praise the ideas behind imperialism? How does those views counter modern ideas on Imperialism today?

Roosevelt's campaign was based around colonial expansion and the Spanish-American Civil War, where he saw service and commandeered with a Calvary unit known as the "Rough Riders". He referred to his service as a main talking point in many of his speeches and exploited it to win the campaign. If there was a view that Imperialism was morally corrupt back 'then', his popularity would've never took off as he figure-headed as a war hero for an imperialistic, colonial war.

simplify brackets

8 - 2a - 7 = a + 40

simplify 8 - 2a - 7 to -2a + 1

-2a + 1 = a + 40

add 2a to both sides

1 = a + 40 + 2a

simplify a + 40 + 2a to 3a + 40

1 = 3a + 40

subtract 40 from both sides

1 - 40 = 3a

simplify 1 - 40 o -39

-39 = 3a

divide both sides by 3

-39/3 = a

simplify 39/3 to 13

-13 = a

switch sides

a = -13

a.impressment of us soldiers