1) language and culture: both Italy and Germany were unified along culural and linguistic lines
2) Defeat of Napoleon: before the Unification, both were under Napoleon's France and this period of time under his control has strengthened feelings of nationalism,
3) strong leaders led both Unifications: Bismark and Garibaldi
Based on the following choices above, the answer is enhance their self-concept. It is because an individual who mature early will likely have a development within herself in which makes her self-concept to be enhanced or to develop in a way that her individuality is changing.
There are different climates and therefore the vegetation are different depending on where the climates are. Tundra for example is prominent in the northern state of Alaska, which is marked by treeless areas and low growing flora like grasses and some flowers. Arizona where I live is both mountainous and desert, so vegetation needs to be able to store and rely on less water, so there are a lot of Cacti.
I'm sure you can find a ton of other examples.
Answer:
The 13 colonies need to join together or they will be killed by the French/English