Colonial History of the United States Essay Example | Topics and Well Written Essays - 750 words - 5

Colonial History of the United States - Essay Example Each of the groups was very different from each other and came to settle here for a variety of reasons which included both religious and social aspects. They contributed ideas based on government, religion, family, gender and different occupations. Every colony had its own ‘distinct social, religious, political and economic structures’. During the period of Reconquista, both Spain and Portugal gained a lot of experience in conquests and as well as colonization. In addition to this, their skills at ship navigation served as tools to help them colonize the New World. During the 15th century, the leaders who ruled the European nations were the New Monarchs who strived hard to unify their nations. They created a strong and stable centralized government which made way for a burst of economic growth in Europe. This government brought about many good changes which included limiting the power created by the Feudal Aristocracy. Though a charter granted the rights of Englishmen to its subjects, yet they were not allowed to take an active part in their own government. A few years later, Sir Edwin Sandy brought about a radical change in the government by granting the colonists a share in its government which was ‘the first representative body in America’, (See Moreys "Genesis of a Written Constitution," Annals of American Academy, Vol. I p. 529 sq.) called the House of Burgesses. In society, gender differences were maintained. Both men and women worked alongside each other, but in their homes, women had to be subordinate to the authority exercised by their husbands following the patriarchal system of the family. The man was considered as the head of the family and he is the one who took all the major decisions where his family was concerned.  

Ionic Liquid and Multicomponent Reaction Thesis Example | Topics and Well Written Essays - 750 words

Ionic Liquid and Multicomponent Reaction - Thesis Example Among the many chemical species whose reactions can be catalyzed by variants of this method include ketones, and alcohols. Ionic liquids oxidize alcohols faster than conventional solvents, (7), (14) and are useful for both ÃŽ ±,ÃŽ ²-unsaturated ketones, (15) and diketone derivatives. (16), (17), (18)   , (19)  Ã‚   Of course, multi-component reactions involving these, or aldehydes, amines, carboxylic acids and isocyanides are typical of an Ugi reaction. The isocyanides themselves being critical to the four-component reaction. (20)   As well as being central to Passerini-type reactions. (4)   In addition, ionic liquids are useful for isomerizations, sugar acetylation, (21) the Baylis-Hillman reaction, (22) other high-temperature organic syntheses, given high thermal stability. (When dicationic) (23)   Within Ionic liquids, yields can be relatively high for stereochemistry-retained vinyl chalcogenides, (24) and N-substitution of alkyl halides, and various chlorides. (25)   Just a few of the reactions possible with ionic liquid multi-component processes are listed below: Alkylation, The Michael reaction, Knoevenagel condensation, and at least four others, not to mention both two-step, and multicomponent domino reactions, for a start. (13)   Ionic liquids are superior in the carbonylation of some halides. (26)   Several sources discuss these reactions in terms of efficiency, and the lessening of environmental impact. (16), (13).