They promised heaven on earth and distributed fake pictures with giant crops. In 1931, the country was experiencing what while rural wheat farmers were experiencing this. 1931 brought the Great Depression in cities and a record breaking wheat harvest and record high prices in rural areas. What year did tractors come to the fields? Tractors gained popularity in the 1920s as giant armored bugs.
If you cannot see the truck driver's reflection in his or her side mirror, you are in the truck driver's blind spot and they cannot see you. If you stay in those blind spots, you block the trucker's ability to take evasive action to avoid a dangerous situation. A truck's blind spots are called No Zones. A No Zone is the area around the trucks where your car is no longer visible or you are so close that the truck can't stop or maneuver safely. In both cases, when you are in a No Zone you are in much greater danger of getting into a collision.
The number of blinds is usually two, but it can range from none to three. The small blind is placed by the player to the left of the dealer button and the big blind is then posted by the next player to the left. The one exception is when there are only two players (a heads-up game), when the player on the button is the small blind, and the other player is the big blind.