El nino and its effects
severe drought and associated food insecurity, flooding, rains, and temperature rises due to el niño are causing a wide range of health problems, including disease outbreaks, malnutrition, heat stress and respiratory diseases.

a, c, & d are correct:

they wanted lands to settle the extra population.

they wanted new markets for english goods.

they wanted to avoid civil war.

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation:

it is

a

asked for and recieved from the united states

bbgftrtyc