The Petition of Right reinforces the Magna Carta.
The Petition of Right was made to restate the legitimacy of the Magna Carta. Parliament used it because the King had been going against Magna Carta by gathering forced loans.
Answer:
It was some sort of compensation akin to a <em>"man price"</em> or <em>"man payment"</em> called <em>"Weregild"</em><em>;</em> kind of a compensation paid to the party or family affected by a fatal feud outcome from the perpetrator, it was aka <em>"blood money"</em>, it was a price on somebody's life and paid as a fine to repare damages among family feuds, sometimes partly paid to the Kings and/or Lords as well, thus preventing further punishment o retaliations.
prevent European nations from buying the land
The Articles of Confederation provided for a government. It contained no official role for a President.