What brought about the Red Scare in American in 1919-1920 ? Americans feared the rise of communism in America

The Russians were threatening a nuclear attack on America.

The western states were experiencing a terrible drought.

Americans were worried because lawmakers wanted to remove the color red from our flag.

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.

The creation of the trans-siberian railway allowed people to travel across russia. how could this railway impact russian culture?

Based on what you know about the location of the earth in relation to the sun, why is this called the goldilocks zone in other galaxies? a. it's a region that exhibits a weak gravitational pull, thus maintaining a safe distance from the sun. b. it's an area that doesn't experience any major weather events that could cause mass extinctions. c. it's an area that's an optimal distance from the sun for potentially supporting life. d. it's a region that's unaffected by asteroid or meteor impacts.