Answer:
Correct answer are:
Leaders are greedy for more power and land.
It is better to be larger than smaller.
A larger population requires more food.
Explanation:
First option is not correct as this a metaphor, not a reason why someone would expand its kingdom.
Second option is correct as every ruler wants to strengthen its influence and power outside the region he is ruling.
Third option is correct as all kingdoms are trying to spread as much as possible.
Fourth option is not correct as we cannot presume that the neighbors are becoming stronger.
Last option is also correct as this is main reason for development of countries, and is economical.
