Discovered that
yellow fever was
spread by mosquitoes
Reasons for
Colonial Expansion
Dr. Walter Reed
Mexican Rebel
Leader
Pancho Villa
Protectorate
Need for raw
materials,
Nationalism,
Strategic
purposes,
attitudes toward
other people
Peaceful settlement
between Japan and
Russia-negotiated
by Roosevelt
Treat of
Portsmouth
Prevented
Europeans from
further colonization
of Western
Hemisphere
Something
being
protected by
another
Monroe Doctrine
Secretary of Navy
that formed the
“Rough Riders”,
later became
President
Panama Canal
Waterway created
to shorten the
shipping route
between the
Atlantic & Pacific
Big Stick Policy
Name for
Roosevelt
Corollary- “walk
softly and carry a
….”
De Lome Letter
Theodore
Roosevelt
Need fro a
canal,
Hemispheric
Security,
Economic
interest
Reasons for
US interest in
Caribbean
Marks Spain’s end
as a colonial
empire, US
emerges as a world
power
Spanish letter
saying President
McKinley was
weak
Spanish-American
War