CREATE TABLE "roller_coaster" (
"Roller_Coaster_ID" int,
"Name" text,
"Park" text,
"Country_ID" int,
"Length" real,
"Height" real,
"Speed" text,
"Opened" text,
"Status" text,
PRIMARY KEY ("Roller_Coaster_ID"),
FOREIGN KEY ("Country_ID") REFERENCES `country`("Country_ID")
)

CREATE TABLE "country" (
"Country_ID" int,
"Name" text,
"Population" int,
"Area" int,
"Languages" text,
PRIMARY KEY ("Country_ID")
)
SELECT T1.Name ,  T1.population FROM country AS T1 JOIN roller_coaster AS T2 ON T1.Country_ID  =  T2.Country_ID ORDER BY T2.Height DESC LIMIT 1
Show the name and population of the country that has the highest roller coaster.