Jackson introduced policies about universal male suffrage which increased the number of voters. Before those policies, only those who belonged to certain religions or those who were property owners were allowed to vote. After those policies, all men of age were allowed to vote regardless of their religion or their ownership status.
Many experts believe that the decline of the ancient Aryan civilization was caused by environmental changes. Another theory suggests that a sharp rise in the Aryan population led to the decline.
Some are more desirable because every person has a personal preference that appeals to them and if it isn't appealing to them or if society likes one more, it would naturally draw the to it.
Maybe it’s doing things for your country. I’m not sure. I just know the line “ask not what your country can do for you, but what you can do for your country.”