In 1944 alone, the United States built more planes than the Japanese did from 1939 to 1945. By the end of the war, more than half of all industrial production in the world would take place in the United States. Wartime production boomed as citizens flocked to meet the demand for labor.
Cardio Equipment. Building your butt muscles does not have to be restricted to the weight equipment. Use cardio machines for this purpose, particularly those that that incorporate some type of resistance or incline. Stair climbers, for example, are a great way to get in cardio and focus on strengthening your glutes.
Production buildings are machines used to produce all the various products available in the game. They are either located on the farm or around the fishing lake. Each building is unlocked at a certain experience level. The first building is unlocked at xp 2. The last building is unlocked at xp 80.