I believe the answer you are looking for is the Speaker of the House. The majority party always elects the House's Speaker. For example, the House is currently controlled by the Republicans and so, the Speaker of the House is Paul Ryan, a Republican.
Containment was a United States policy using numerous strategies to prevent the spread of Communism abroad. The US enter the Korean War to defend South Korea from a communist Invasion and the US adhered closely to containment during the Vietnam war.
By expanding its territories and improving its government.
The world's population today is much larger than it has been in anytime in the history of the world, and has been continuing to grow ever since the Industrial Revolution, since this raised the living standards and increased in incomes of an enormous number of people, especially in the western world. Advances in medicine have also played a major role.
Tough hides, long eyelashes, and water-filled humps enabled camels to carry goods over inhospitable desert terrainwer: