political struggle

progress; improvements in social welfare. / Personal progress, usually in the development of a skill.

To improve (in reference to a society's technological capability or general quality of life). / To advance in proficiency; to make progress in the development of a skill.

obstacle, hindrance, impediment

hinder, check, obstruct, impede

a land, a large place / a country in general, a region / a country as in a nation, a state / the office of emperor, the crown; affairs of state / a province of ancient Japan

there are many, there is much, there are numerous

many, much

multi-

(phonetics) obstruent