Gardner's theory of multiple intelligences divides intelligence into independent abilities.

Howard Gardner theorized that human has unique aptitude set of capabilities, which made him divide intelligence into nine types. 

1. Verbal-Linguistic Intelligence - verbal skills and sensitivity to sounds and meanings of words that are well-developed.
2. Logical-Mathematical Intelligence - the capacity to perceive or recognize logical and numerical patterns, and the ability to think conceptually and abstractly
3. Spatial-Visual Intelligence - a well-developed skill of visualizing space accurately and abstractly to navigate it.
4. Bodily-Kinesthetic Intelligence - the ability to control body movement and to handle things with dexterity
5. Musical Intelligence - the ability to create pitch, timber, and rhythm
6. Interpersonal Intelligence - the ability to interact with other people, and to understand them
7. Intrapersonal Intelligence - the capacity of being self-aware and understanding who you are
8. Naturalist Intelligence - the ability to identify rand categorize things in nature
9. Existential Intelligence - the capacity and sensitivity to human existence

Aunitary state is a form of state where power is concentrated and there is a single center of power that extends its actions throughout the territory of the respective state. this, through its agents and local authorities, delegates of that same central power, and in its majority; it can count on a single legislating apparatus; except for certain exceptions, which legislate for the entire country; a judicial power, which applies the current law to the entire territory of the state and within which a supreme court of justice is established, which has jurisdiction at the national level; a single executive power, that is conformed by all the governors (president, governors, mayors, etc.); and a single political constitution, which governs all the territory and to which all the authorities and inhabitants of the state are subject.a confederation (from the latin: confœderatĭo) consists of the union of states that retain their sovereignty and are governed by certain common laws. initially there was talk of "confederation" in the case of alliances, for this reason the word "confederation" is still used in non-governmental civil society institutions. for this reason, the term confederation is also used to describe any type of organization that combines the authority derived from other semi-autonomous entities. in this case, sports confederations can be cited as some examples. however, the word confederation takes much more relevance when it comes to some permanent alliance of states or some association or association of states.characteristics of a federal government system

  a) written constitution. also known as magna carta and a necessity of the democracies that form federations to regulate the principles by which the government will be governed, because if they had to act without a body of specific laws would produce confrontations.

b) territorial division. federalism is constituted by the division of powers on the geographical basis of each territory.

c) decentralization. in a federal system there is both a central government and units of government lower than the central one, each making decisions regarding the provision of certain public services in their respective geographical jurisdictions.

d) supreme court of justice. to counteract the rigidity of the written constitution, judicial action is required to interpret said constitution and necessary changes can be made.

The changes to agriculture in the united states since 1900 is that increased mechanization has increased food production, thereby increasing the need for labor. there has been an increased need for higher speeds of food production due the fact that the population in the united states continues to rise.