Answer and Explanation:
1. The capital of Brazil was changed on April 21, 1960 by the president Jucelino Kubitschek, who built a city, called Brazilia, to become the country's federal capital instead of Rio de Janeiro, which was the old capital. He did this because Rio de Janeiro is very close to the ocean and he believed that it left the capital vulnerable to marine attacks, for this reason, he decided to move the capital to a more central region of the country, where it would be more protected.
2. Internal migration in Brazil occurs mainly due to economic factors, where citizens from the poorest states and with the worst living conditions (northeastern states) migrate to the producing centers of the country, which are the southeastern states, mainly São Paulo. Internal migration in China also has the economic condition as its main reason, however the Chinese are constantly migrating to the country's capital and need to submit to a series of laws and guidelines, while in Brazil, this process is done without any type of legislation or restriction.
I need to see the following.
The model that describes how data is written to a blockchain is the: append-only data structure.
<h3>What is an Append-only Data Structure?</h3>
Append-only is computer data storage property whereby new data can be added to a blockchain, like an additional block, in a time-ordered sequential order in such a way that the data added cannot be easily altered as al data are permanently stored across all nodes.
The append-only data structure makes data stored almost immutable. This is the model in which the blockchain technology is built on.
Therefore, the model that describes how data is written to a blockchain is the: append-only data structure.
Learn more about append-only data structure on:
brainly.com/question/25558500
Military power, strength, and national security are the goals of a prince.
Machiavelli’s philosophy is basically to become a good leader you must do anything even it is immoral and wrong. He first writes that a prince’s duty concerning military matter must always think of war only, even in times of peace. They must know their surroundings exactly so they can defend and make effective strategies to counter the enemy’s attack. They must also know historical battles so they will be able to learn their tactics and improve on it. He then talks about the prince’s path: should the prince be generous or a miser. He is saying that it is better to be known as a greedy prince than a generous prince because if the prince follows the good path it will only lead him to destruction while being greedy will result in his safety.
Answer:
Sam is 10 years old.
Explanation:
Lets just say this was asked in 2020 meaning 5 years ago was 2015.
If Pete was 15 in 2015 and his age was 3x the age of Sam, Sam would be 5.
15/3= 5
Now that 5 years has passed since 2015 Sam is 10 and Pete is 20.
(15+5) + (5+5)
Adding the two ages in current times, the sum is 30.
20 + 10 = 30
