Urp the viability of intermediate-sized cities in middle america and the caribbean will depend on: a. the extent to which national governments provide needed security improvements. b. the degree to which they can integrate their ecnomies with the global economy. c. their ability to attract foreign investment from the united states and europe. d. their success at stemming the flood of in-migrants from rural areas.

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.

The geographic feature in the westernmost corner of kenya is answer: the great rift vally

The answer is    d.  central highlands

The circumcenter is  equidistant  from each vertex of the triangle. the circumcenter is at the  intersection  of the  perpendicular bisectors  of the triangle's sides. the circumcenter of a right triangle falls on the side opposite the right  angle. the incenter  of a triangle is always inside it.