Boats: without boats, people could not travel to these places, which were entirely surrounded by large bodies of water.
Colonization was expensive and risky.
Colonization was expensive and risky.
Colonization was expensive and risky.
The necessary technological conditions did not exist.
Revolution is not always necessary for the advancement of humanity. Peaceful and incremental changes can also lead to progress and positive societal transformation. However, in some cases, revolution becomes a means to challenge oppressive systems and bring about significant societal changes.
Continuing education is critical for advancement in any occupation. If you have a true passion for what you do, you will have a natural propensity toward seeking advanced knowledge of that field, and that advanced knowledge will promote advanced positions.
It is not necessary a visa for the citizens of Australia to enter in Romania.
The frog heart has three chambers: two atria and a single ventricle.
Sunscreen is recommended anywhere, anytime in the world, but in winter, even in Australia it is not so necessary
Technical resources are the necessary resources or tools that you need to do a job. They include the devices and information that give students help with questions.
After my opinion the mining is necessary, the selling not.
It was necessary to mention in your question where we were measuring the distance to Australia from.