what are the reasons why england conquered many countries?

Impressment was a long standing authority from the state for the recruitment to military service, either on land or on sea. The impress service, or more commonly called the press gang, was employed to seize men for employment at sea in British seaports. Impressment was used as far back as Elizabethan times when this form of recruitment became a statute and later the Vagrancy Act 1597, men of disrepute (usually homeless vagrants) could be drafted into service. In 1703, an act limited the seizure of men for naval service to those under 18, although apprentices were exempt from being pressed. In 1740, the age was raised to 55. Officially, no foreigner could be impressed although they were able to volunteer. If, however, the foreigner married a British woman, or had worked on a British merchant ship for two years, their protection was lost and they could be impressed. However, these limits were often ignored and the impressment of Americans into the British navy became one of the causes of the American War of 1812.

Once a man had been seized by the press gang, he was offered a choice. He could either sign up as a volunteer and receive the benefits that came with being a volunteer (advance payment etc.) or he could remain a pressed man and receive nothing. Some governments issued "Protections" against impressment, including Britain. These were mainly issued by the Admiralty and Trinity House for specific types of employment. These protections had to be carried at all times and shown to the press gang on demand to prevent the holder being impressed. However, in times of crisis, even the protections became invalid. The order "press from all protections" - known as the "hot press" meant that no person was exempt from impressment.

Despite the substantial increase in the population of Aborigines since 1911, the conditions of life in which they find themselves remain impoverished and highly oppressive. Tatz states that according to every social indicator available Aborigines are found at the top or bottom. Diseases, such as coronary disease, cancer, diabetes, and respiratory infections, are far more prevalent than 30 years earlier. Life expectancy is 50-55 years for males, approximately 55 years for females. The likelihood of an Aborigine being unemployed is far greater—22.7 percent as opposed to 8.1 percent. Fewer Aborigines own their homes. For Aborigines fortunate enough to have employment, their income is 25 percent less on average. Large proportions of Aborigines languish in prisons (14 percent of the prison population in 1997) and police watch-houses. This excludes those confined, through economic necessity, to black settlements, like Cherbourg or Yarrabah in Queensland.

The oppressed condition of Aborigines is marked in other ways—a prevalence of personal violence, lack of care for children, increased death from non-natural causes, as well as high levels of alcohol and drug abuse. It should come as no surprise that one manifestation of oppression—alcohol and drug abuse—is commonly offered as the explanation for all manifestations of oppression.

Or you could look at the disgraceful way the aborigines were, (and still are) treated by the Australians.

Not to put too fine a point on it, you've just been peddling bullshit here.

Taking over the country was a long, slow process which lasted for nearly two centuries, and often involved taking sides in local conflicts. In fact, that was a problem throughout the world, throughout the centuries.

They weren't seafaring nations. And because England was one, the British "conquered many countries".

I repeat. Not once did I express my views or feelings about the good, bad or indifferent points regarding the British Empire.