What were six important sets of actions and reactions in the head 1824 to 1846 that lead to war between the US and Mexico

Texas was originally a part of Mexico and had a greater population of its citizens in the area.

The most important set of actions which led to the war between US and Mexico include

U.S. Senate defeating the agreement of annexation with Texas

U.S. President John Tyler signing the Brown Resolution which offered Texas terms of annexation.

In response to passage of the Brown Resolution, Mexico's minister to the U.S., Juan N. Almonte, requests his passports, breaking off diplomatic relations between the two countries

Texas convention votes in favor of annexation to the United States

In Matamoros, Mexican General Francisco Mejia issues a proclamation threatening hostilities against U.S. troops

United States declares war against Mexico and US troops occupy Matamoros.

health care plans in the united states having high costs because they are focusing on providing quality programs for different groups of individuals. the quality of the service is based on money flow received from the members. without this investment, couldn't be possible a constant scientific searching to prevent death and illness caused because of low levels of health investigation. currently, the complaints are not about the highest cost, but about the coverage and benefits to access the necessary health services required by the members.  

besides, if a global health system is established the quality levels will fall down because of the standardized of the health. the access to care will increase but the quality will be low because it depends on the money invested.

the steam engine.

the locomotive.

the telephone.

the telegraph.

the internal combustion engine.

the rifle.

ironclad ships.

electricity/light bulb.