They do not occur only during spring they occur when the sun, moon, and earth are all alined.
The correct answers are:
- Nations will adopt a universal language;
With the globalization, more and more languages are becoming endangered, and very soon will be gone forever. The reason with this is that with the globalization, there's also a language that is spread around, the English language, and the majority of the young population is very fond of it and learns it, neglecting their own language in meantime.
- More languages will become extinct;
Because the spreading of a universal language seems to be taken place, with the English language being the front runner, and because the young generations tend to focus on it more than at their own language, the native languages will die out relatively quickly in the future, at least most of them.
For the availability of land
The answer is genocide.
Genocide is an attempt to destroy a group of people.
Ex: Genocide against Rohingya Muslims in Burma
