The practice of democracy and equal rights to all the citizens are the characteristics which are influences by the Roman and Greek democracy.
Explanation:
One nation and one constitution are also one the characteristic which affected by the Roman and Greek democracy. Giving equal rights and status to each and every citizen regardless of their gender, caster, country origin and etc are ways which are influences the government and what we have today. Equality helped in spreading peace in the nation.
I do believe the correct answers are;
The industrial growth boosted economic growth in parts of Europe.
The new industrial technologies improved means of transportation.
probably stamps cuz ya know they're real tiny and they probably thought that in like 30 years no one would be sending a letter so they're like 'yea ok they're just sticky pieces of paper no one cares'